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Maria W.
$100/hr
  • Trophy Icon R
  • Statistics
  • Data Analysis
  • Exploratory Data Analysis
  • Data Mining
  • Data Modeling
  • Machine Learning
  • Researcher
  • Consultant
  • Quantitative Analysis

I am a scientist and professional, skilled at problem solving and communication with over 10 years of experience in scientific research and data analysis. I have a Masters degree in Statistics and a PhD in Biology from Stanford University. I am an American Statistical Association accredited Graduate Statistician (GStat). I have taught Biostatistics at the undergraduate level and worked with numerous researchers as a statistical consultant and data analyst. I have experience communicating statistical concepts to those with any quantitative skill level. I make it a priority to listen to and fully understand the goals of my client prior to...

Robert M.
$45/hr
  • Trophy Icon R
  • Statistics
  • Statistical Computing
  • Machine Learning
  • IBM SPSS
  • Regression Testing
  • Statistical Analysis
  • Quantitative Research
  • Quantitative Analysis
  • Survey Design
  • Linear Regression
  • Structural Equation Modeling
  • Academic Research

I hold a PhD in Quantitative Psychology from the University of Virginia (UVA) and a B.S. in Psychology with minors in both Mathematical Science and Statistics from the University of North Florida (UNF). I have worked as a member of the OpenMx structural equation modeling software development team. I have 8+ years of experience with statistical analysis and mathematical modeling, differential equation solving, structural equation modeling, factor analysis, machine learning, data visualization, R, SPSS, and other areas of applied mathematics.

Nancy Z.
$70/hr
  • Trophy Icon R
  • R Shiny
  • Data Science
  • Data Analysis
  • Epidemiology
  • Public Health
  • Python
  • SQL
  • Machine Learning
  • Microsoft Power BI Data Visualization
  • Forecasting
  • Data Modeling
  • Linear Regression
  • Logistic Regression
  • Data Visualization

I am a data scientist with academic training in epidemiology and 5 years of working experience in data analytics for both government organizations and consulting firm. I have experience on those projects: - Developing data visualization products using R Shiny, Microsoft PowerBI or Tableau - Conducting observational studies using health administrative data such as HCUP NIS, Truven MarketScan, electronic medical records, etc. - Building prescriptive or predictive models (mixed effect model, logistic regression, clustering, decision tree, etc.) - Web scraping for data acquisition - Reports automation I excel at listening to clients' needs...

Faizan S.
$70/hr
  • Trophy Icon R
  • Machine Learning
  • Natural Language Processing
  • Python
  • Data Mining
  • Deep Learning
  • Data Science
  • SQL
  • PyTorch
  • TensorFlow
  • C++

I have over 8 years of experience in machine learning and data science. Through my education and experience, I have developed strong background in linear algebra, probability, statistics, programming, and, machine learning. Once you hire me, I will do my best to create value for your business. Detailed experience: + Natural language processing and text mining + Developing, training, testing, and deploying machine/deep learning models + Reinforcement learning + Computer vision + Algorithmic trading + Automatic speech recognition and generation + Linear/non-linear programming + ETL and data extraction via API + Data visualization and...

Terrence C.
$35/hr
  • Trophy Icon R
  • Quantitative Analysis
  • Researcher
  • IBM SPSS
  • Excel
  • Data Visualization
  • Tutoring
  • Statistics
  • Statistical Analysis
  • Data Analysis
  • IBM SPSS
  • Linear Regression
  • Logistic Regression
  • Hypothesis Testing

I am a freelance data analyst, research/statistics adjunct professor, and educational psychology Ph.D. student with a strong foundation in statistics and data analysis. I have 6+ years of experience in research/data analytics, social and behavioral science research, and teaching college students (both at the undergraduate and graduate level). I am fluent in numerous statistical analysis programs such as SPSS, R/Rstudio, and JASP. I enjoy conducting quantitative analysis and problem-solving. Please feel to contact me with all your research and data analysis inquiries. Educational and Research Background: I am currently an educational...

Jiddu Alexander B.
$75/hr
  • Trophy Icon R
  • Shiny
  • ggplot2
  • Data Science
  • Machine Learning
  • Data Visualization
  • Artificial Neural Network
  • Data Cleansing
  • Data Modeling
  • Data Analysis

Please also see my blog: jiddualexander.com I'm a data scientist / analyst and an expert R programmer. I am strong with ggplot (ggplot2 data visualisation) and I am also a Shiny App developer. I can create custom dashboards for your data with intelligent analytics and interactive graphics. I program in R 6 days a week and I am very confident with all aspects of a data analysis project. I use mostly the very powerful packages created by Hadley Wickham (data import, cleaning and tidying (tidyr), manipulation (dplyr), visualisation (ggplot2) and reporting (Shiny)). The list of online certificates (below) is a good indication of the focus of...

Jolanta M.
$60/hr
  • Trophy Icon R
  • Statistical Analysis
  • SAS
  • Tableau
  • Data Visualization
  • Transact-SQL
  • Microsoft Excel
  • Data Modeling
  • LaTeX
  • Business Intelligence

✔️ 8+ years of professional experience in data analytics ✔️ 3 years of experience working for Big Four consulting company ✔️ 13 years experience in R 🎓 MSc Quantitive Methods in Economics 🔮 advanced in R, R Markdown, R Shiny, SAS, Tableau, Latex, Excel, SQL, Snowflake SQL The methodology at my disposal ranges from: ★ explanatory data analysis, unsupervised learning algorithms such as association rules and cluster analysis ★ hypothesis testing, chi-square, ANOVA, mixed effect models ★ thorough well-founded statistical modelling methods such as logistic regression, GLM, time series forecasting, and survival analysis ★ up to data mining...

Vrushali A.
$30/hr
  • Trophy Icon R
  • Python Numpy
  • SciPy
  • Python Pandas
  • Python Scikit-Learn
  • Python
  • Microsoft Power BI Development
  • Microsoft Power BI Data Visualization
  • Tableau
  • SQL

I am currently a Data Analyst at SagasIT Analytics Bangalore, working on various data analytics and BI projects, primarily using R and Power BI. Also skilled with Python, Tableau and SQL and a good understanding of machine learning algorithms and model building. I have represented SagasIT Analytics at our clients company Hindustan Unilever Limited as a Power BI designer and developer and worked on their e- B2B project called Shikhar. Apart from that I have worked on various projects , such as creating a custom visual for a government body to analyse the survey data of a European country. SagasIT Analytics ( sagacity s?'gas?ti/ ) is an...

David O.
$78/hr
  • Trophy Icon R
  • Machine Learning
  • Quantitative Analysis
  • Shiny
  • Bioinformatics
  • Statistics
  • Data Analysis
  • Data Science
  • Data Scraping
  • Data Visualization
  • R Shiny
  • ggplot2
  • Analytics
  • Forex Trading
  • API

I am an experienced data scientist who has worked in Bioinformatics and Business analytics. I build automated trading strategies in my spare time. I've been programming in R daily for over 10 years and that's where I do most of my data analysis. I have a lot of experience with machine learning and data visualizations, mainly in R and Shiny. Working in a diverse set of fields has given me experience with many different types of data and obtaining it from many different sources. Thereby making me an excellent data miner, and knowing how to transform that data efficiently.

Benedito C.
$60/hr
  • Trophy Icon R
  • Data Analysis
  • Statistics
  • Tableau
  • HTML5
  • Microsoft Excel
  • Shiny
  • QGIS
  • CSS 3
  • Data Visualization

I am an accomplished information designer celebrating my eleventh years in delivering exceptional results and values to public and private sector Clients in data visualization, applied statistical analyses and psychometrics, and program evaluation. I'm passionate about data visualization, reproducible research, visual storytelling, and believe everyone can make sense of their data. I specialize in answering business questions and uncovering insights from data using a blended approach that combine visual analytics and applied statistical analyses. I create streamlined report and design data-driven static charts, interactive visualizations,...

Marco S.
$100/hr
  • Trophy Icon R
  • Python
  • Investment Strategy
  • Deep Learning
  • Forex Trading
  • Artificial Intelligence
  • Time Series Analysis
  • Machine Learning
  • Data Science
  • Econometrics
  • Cryptocurrency
  • Bot Development
  • Quantitative Research
  • MATLAB
  • Quantitative Finance
  • Quantitative Analysis

Quant in major Investment Banks, 1B+ Hedge Funds and asset management companies, and Crypto Fund Manager. I have strong knowledge of the financial markets, particularly in Trading Strategies, Asset Allocation, Investments, Derivatives, and Risk. I am a motivated self-starter, analytical, in love with complex tasks and empirical solutions, delivering actual value to investment companies. My skills vary from time series modeling to Machine Learning, Asset Allocation strategies, Systematic Trading, Investment Research, and more.

Emmanuel B.
$55/hr
  • Trophy Icon R
  • Python
  • SQL
  • Time Series Analysis
  • Statistics
  • Internet of Things
  • Deep Learning
  • Machine Learning
  • Digital Signal Processing
  • TensorFlow

I am a data scientist who developed different end-to-end data solutions for the Internet Of Things. I have the tools to develop your IoT, time series or data science projects. I focus on providing clean and reusable code that becomes an asset to your solution. Skills ------ * Professional developer for data science in R, Python * Expertise in time series: forecasting, classification, anomaly detection * Methodology for data science project: from data preparation to experiment * Focus on your KPI * Clear communication, present technical results simply Work experience -------------------- I have four years of industry...

PhD Jacek S.
$50/hr
  • Trophy Icon R
  • Equations
  • MATLAB
  • Pricing
  • Economic Analysis
  • Statistics
  • Analytics
  • Quantitative Research
  • Microsoft Excel
  • Probability Theory
  • Visual Basic for Applications
  • Econometrics
  • Microsoft Access Programming

Since 2002 I have been employed at the Department of Economic Forecasting and Analysis at Wroclaw University of Economics. Currently at the post of an assistant professor. Although this work gives me a lot of satisfaction, I am looking for opportunities to test the suitability of my knowledge and skills (and maybe acquire new) in a real business. My current work is shared more or less equally between scientific research and teaching. In addition, occasionally I do expert analyses. I also own websites www.szandula.pl (a website for communication with students ) and www.wzory.info (portal featuring equations and tables used in different areas...

Arihant J.
$21/hr
  • Trophy Icon R
  • Data Analysis
  • Statistics
  • Python
  • Tableau
  • IBM SPSS
  • Econometrics
  • MS Excel
  • Data Modeling
  • RStudio

I am a professional data analyst with 12+ years of experience in the corporate and academic fields. Being an experienced data analyst I am proficient in data mining, data preparation, exploratory data analysis, data visualization, and fitting statistical models/machine learning models. Throughout the years I worked with data and information, understood the requirements, contexts, gained the domain knowledge where needed, and applied my skills and problem-solving ability to execute the task successfully. While executing the projects and working as a research associate at the Indian Institute of Management (IIM), Indore (one of the top-5...

Nils M.
$150/hr
  • Trophy Icon R
  • Psychometrics
  • Data Analysis
  • Statistics
  • Structural Equation Modeling
  • Stata
  • Survey Design
  • Psychology
  • Quantitative Research
  • Quantitative Analysis
  • IBM SPSS

:: PhD :: 10+ years experience as a Psychometrician :: Associate Professor of Quantitative Psychology (Tenured) :: Corporate experience working for several test editors on test development and accreditation :: 35+ published papers in Psychology and Business journals (Intelligence, Journal of Personality, Personality and Individual Differences, British Journal of Psychology, Learning and Individual Differences, Journal of Career Assessment, Journal of Consumer Marketing, Journal of Management development, British Journal of Social Psychology, etc.), 50+ conference presentations. :: Instructs in Statistical Analysis with SPSS and R at the...

Omkar R.
$60/hr
  • Trophy Icon R
  • Snowflake
  • Python
  • BigQuery
  • Tableau
  • Data Visualization
  • SQL
  • Alteryx Analytic Process Automation Platform
  • ETL Pipeline
  • Microsoft SQL Server
  • Data Analysis
  • Statistical Analysis
  • Conversion Rate Optimization
  • Machine Learning
  • A/B Testing
  • Data Science

I help businesses collect data, extract meaningful insights and work with their team to implement them while ensuring exceptional ROI. Hello! I am Omkar and in my 10+ years of experience, I have helped transform 50+ global businesses with their complex problems in Data Science, Business Intelligence, and Advanced Analytics Services. I have worked with top companies like S&P Global, Newsweek, KPMG, Edelweiss, and many more. Let’s turn your enterprise data into a machine that directly impacts your revenue generation, profits, and strategic decision-making with insights that you need to become or maintain industry leadership. I excel at...

Shaun A.
$50/hr
  • Trophy Icon R
  • GIS
  • Python
  • Geospatial Data
  • Remote Sensing
  • Data Analysis
  • SQL
  • Map
  • Mapbox
  • R Shiny
  • Cartography & Maps
  • Leaflet
  • QGIS
  • PostgreSQL
  • PostGIS

I am a Geographic Information System (GIS) professional, specialized at developing scripts and applications for processing, analyzing, and visualizing geospatial data. I work primarily with free and open source solutions such as GDAL/OGR, Python, R, QGIS, and PostGIS, and pride myself on attention to detail, problem solving ability, writing well documented and efficient code, and punctual delivery of results. I have an enthusiasm for finding intelligent solutions to geoprocessing and spatial analysis problems, and can rapidly resolve issues with complex workflows, ETL, and processing large datasets. With an academic background in ecology...

Trishna M.
$50/hr
  • Trophy Icon R
  • Scientific Writing
  • HTML
  • Graphic Design
  • MATLAB
  • Excel
  • Scientific Research
  • WordPress
  • Data Visualization
  • Sales Analytics
  • SQL
  • Snowflake
  • Adobe Illustrator
  • Office 365
  • Tableau

I have worked as an data analyst in AstraZeneca UK and University of Chicago for over 10 years. My background is Biotechnology and Bioinformatics but I have worked in Neuroscience (Vision) for the last 5 years. I also worked as a domain knowledge expert for a startup last year. My top programming skills include R, MATLAB, Google Analytics, SQL, HTML. I have build several websites while at work and have experience writing SOPs, setting up labs and working Protocols. I have several online publications some of which are listed below. I have built several Google dashboards and analyzed retail and sales data for marketing insights, KPIs , key...

Murat K.
$78/hr
  • Trophy Icon R
  • SAS
  • Statistics
  • Data Analysis
  • Python
  • IBM SPSS
  • Tableau
  • Regression Testing
  • Econometrics
  • Time Series Analysis
  • Marketing Analytics
  • Neural Network
  • Biostatistics
  • Google Ads
  • Product Analytics

Cornell/MIT educated data scientist with financial modeling and digital analytics experience at Fortune 500 companies. • Academic experience as TA/RA at MIT and Cornell University. • Advanced R, Python, SPSS, SAS, Tableau, SQL, MPlus. Some of the projects I have done are: • Time series analysis, financial forecasting and other econometric methods • ANOVA, MANOVA, GLM, SEM in social sciences • Biostatistics and medical research including analysis of clinical trials • Regression modeling • Machine learning and various statistical models in big data • Valuation, investment analysis and financial modeling in the investment banking industry...

Md Akhtar H.
$40/hr
  • Trophy Icon R
  • Statistics
  • Data Analysis
  • Research Papers
  • IBM SPSS
  • SAS
  • S
  • Stata
  • Fortran
  • Minitab
  • Biostatistics
  • Mathematics Tutoring
  • Data Mining
  • Internet Research
  • LaTeX

With my B.Sc. and M.S. in Statistics and with my 10 years’ experience in practical field of research and teaching, I’ve numerous experience of analyzing data and writing publication quality papers/thesis in various fields including technology, business, demography, psychology, medical science, social science, public health, economics etc. I’ve published several research articles in different journals and written several conference papers. Moreover, I've experience of supervising a number of undergraduate projects and graduate theses in different applied fields. These thesis works covered univariate to multivariate statistical analyses with...

Ahmed M.
$50/hr
  • Trophy Icon R
  • Microsoft Excel
  • Qualitative Research
  • Biostatistics
  • Quantitative Analysis
  • IBM SPSS
  • Data Analysis
  • SurveyMonkey
  • Data Science
  • Academic Writing
  • Statistics
  • Statistical Modeling
  • Research Papers
  • Stata

🔹 Researcher and a top-rated freelancer with over 5 years of experience in the field of statistics and data analysis currently pursuing my PhD at Cairo university, Egypt. 🔹 Completed more than 300 projects related to data analysis 🔹 Published more than 10 research manuscripts in ISI indexed journals 🔹 Fields of interest: Meta-analysis, predictive modelling, biostatistics, public health, and psychology 🔹🔹🔹Qualifications🔹🔹🔹 🔹 Data Analytics Professional Nano-degree Program 🔹 Masters degree in Clinical Pharmacy and Pharmacy Practice 🔹🔹🔹Skills🔹🔹🔹 🔹 Medical statistics 🔹 Meta-analysis and predictive modelling 🔹 Expert in...

Eeshan C.
$60/hr
  • Trophy Icon R
  • Demo Presentation
  • Lean Startup
  • Quantitative Analysis
  • Design Thinking
  • Product Design
  • Statistics
  • SQL
  • PostgreSQL
  • Product Strategy
  • Data Analysis
  • Product Management
  • Minimum Viable Product
  • Business Intelligence
  • Data Science
  • Big Data
  • User Experience Design

A Design Thinker, Product Manager and an AI Solutions Architect with ~10 years of building both B2B and B2C data first products and apps, big data solutions and machine learning algorithms. Versatile experience working with big brands, startups and emerging unicorns. Proficiencies: - Product Strategy & Roadmap - Product Market fit & Competitor Research - Product Design - Wire-framing, UX and usability research - Rapid prototype development - Product refreshes - Agile project management - Scrum, Kanban & XP; wearing the Product Owner & Scrum Master hats - Creating Epics, User Stories, acceptance criteria - Very familiar with deployment...

Jake K.
$50/hr
  • Trophy Icon R
  • R Shiny
  • SQL
  • Excel
  • Excel VBA
  • Data Science
  • Data Mining
  • Microsoft Excel
  • Shiny
  • Web Scraper
  • Data Visualization
  • Data Analysis
  • ggplot2
  • PostgreSQL Programming
  • SAS

Upwork Tests: *TOP 10% - R Programming* *TOP 20% - SQL* I graduated Cum Laude from the University of Arizona with a Computer Science degree. There, I learned many different programming languages -- including SQL, R, SAS, and VBA Excel. With the use of these technologies, I gained valuable experience working under data scientists and senior data analysts for two Fortune 500 companies. I was introduced to data visualization, machine learning, robotic automation, and many other facets regarding the use of data. I look forward to having the opportunity to work for you.

Wesley E.
$210/hr
  • Trophy Icon R
  • Statistics
  • Data Modeling
  • Business Mathematics
  • Data Interpretation
  • Analytics
  • Microsoft Excel
  • Data Science
  • SQL
  • Tutoring
  • Mathematics
  • Mathematical Modeling
  • Price Optimization
  • Equations
  • Mathematical Optimization

Expert Vetted & Top Rated Plus Freelancer! Summary of Skills: Looking to provide data driven insights to companies and people using applied mathematics, statistics, and human ingenuity. My primary language is R, but also use Excel extensively and for business compatibility. Also, have SQL experience. Previously worked for a Fortune 500 tech company (Symantec in internet security) doing business statistics and data analysis. Graduate of Claremont Graduate School with a Masters in Mathematics in 2013. Graduated from Santa Clara University in Finance and Mathematics with an emphasis in applied math and minor in physics. Looking to help...

Mohsin V.
$50/hr
  • Trophy Icon R
  • Python
  • Data Structure
  • Flask
  • AWS Lambda
  • AWS CloudFront
  • Serverless Computing
  • Amazon Web Services
  • Kubernetes
  • Docker
  • R Shiny
  • Shiny

I am an experienced developer with building scalable data driven systems for wide variety of industries. My expertise is python, flask, flutter, Angular

Callum H.
$50/hr
  • Trophy Icon R
  • Data Science
  • Data Mining
  • Data Cleansing
  • SQL
  • Scientific Research
  • Scientific Writing
  • Quantitative Analysis
  • Natural Language Processing
  • Machine Learning Model
  • Statistics
  • Data Science Consultation
  • Statistical Modeling
  • Data Visualization
  • R Shiny

Greetings! I am a data scientist who lives in the R & Shiny ‘Tidyverse’ and it is my mission to extract insight from your data and bring it to life in a clear and meaningful way for you and your customers. I am particularly interested in sentiment analysis and geo-spatial data science projects and draw upon a wide range of environmental and business project experience including demographic surveys, customer classifications, e-commerce data analysis, real-time fraud detection, text mining and telecommunications marketing. I have performed various regression, machine learning and clustering techniques in these roles and bring the results to...

Ryan M.
$125/hr
  • Trophy Icon R
  • D3.js
  • Statistical Modeling
  • Researcher
  • SQL
  • Shiny
  • Machine Learning Model
  • Econometrics
  • Network Analysis
  • Data Mining
  • Data Modeling
  • Marketing Data Analytics
  • Data Analysis
  • Data Science Consultation
  • Operations Analytics

Business consultant, analyst, and software engineer for: -statistical/machine learning models (natural language processing, networks, linear regression, classification trees), -large and/or disparate data sets, performance metrics, forecasting -open source statistical programming (R and Python) -open source plotting software development (D3.js) -Many flavors of SQL and NoSQL database design and query writing for analytics and data science workflows -tabular data, spatial/GIS analysis (geoJSON) and text analysis (CNN) Recent Contracts/projects: - a full stack data science as a service Shiny app for survey analysis - a full stack data...

$NaN/hr

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R vs. Java vs. Python: Which Is Right for Your Project?

When it comes to data science, there’s no one best programming language. There are a few standouts, however, each with its own specialties, as well as packages, libraries, and extensions that further enhance their capabilities.

In this article, we’re going to take a closer look at three of the most popular languages used by data scientists: Java, Python, and R. You’ll learn the basics of each, as well as how to tell which one is right for your data needs.

R: beloved by data scientists

Originally developed by statisticians as an open-source alternative to expensive suites of statistical software like SAS and MATLAB, R is one of the most popular languages for data analysis. It’s been likened to Excel on steroids, able to sift through reams of data, execute sophisticated analyses, and produce publication-quality graphs and tables. What makes R special? In short, it’s a tool built with data analysis in mind.

As data science has become critical to many businesses, R’s popularity has skyrocketed. Organizations as large and diverse as Google, Facebook, Microsoft, Bank of America, and the National Weather Service have all turned to R for reporting, analysis, and visualization.

A key component of R is that, unlike object-oriented programming languages like Java or Python, R is a procedural language, meaning it relies on a series of step-by-step subroutines to execute a programming task. The key difference here is that R uses procedures to operate on data, where object-oriented programming bundles procedures and data together as parts of objects. The advantage of procedural programming is that it gives clear visibility into complex operations with lots of dependencies, which can be important for many data analysis tasks. The tradeoff is that this often requires more lines of code than object-oriented languages.

Another benefit of R? It’s supported by a vibrant community of developers, especially academic statisticians and data scientists.

Java: speed at scale

Java is powerful, portable, and scalable, which makes the platform perfect for building enterprise-scale applications and supporting rapid growth. Java also includes many tools, collectively known as the Java Platform. This robust, open-source development environment includes libraries, frameworks, APIs, the Java Runtime Environment, Java plug-ins, and the Java Virtual Machine (JVM). Taken together, these tools simplify coding with Java and support development at every level, giving developers everything they need to build Java web systems and applications.

Java’s speed allows it to outperform other languages and frameworks, which is a big part of why it’s so well suited to large-scale applications. These performance gains are what prompted Twitter to shift its search engine to Java from Ruby on Rails and move more of its back-end stack to the Java Virtual Machine.

Another key component of Java is that it comes as close to being 100% object-oriented as you can get. With that comes all the benefits of object-oriented programming, from ease of development to modular software to flexibility and extensibility. As one of the most widely known programming languages, it’s easy to find and hire talented developers. What’s more, Java’s massive community of developers means that there’s lots of excellent documentation around.

Python: built for flexibility

Like Java, Python is built to handle high-traffic sites. It’s fast and efficient, with an emphasis on code readability. Python’s motto is “there should be one—and preferably only one—obvious way to do it.” That can mean there’s a bit of a learning curve as developers learn the ins and outs of Python syntax, but the upside is an ability to express concepts with fewer lines of code than would be possible in languages like C++ or Java.

Python’s other great strength is an extensive set of libraries that allow it to perform a wide array of tasks. In particular, the libraries NumPy and matplotlib enable Python to perform many of the analysis and plotting functionalities of MATLAB. These libraries have since been built upon by a number of other libraries that extend Python’s functionality even further.

In short, Python represents a compromise between R and Java, combining the sophistication of the former with the speed and scalability of the latter.

Which language is right for your data needs?

The short answer is that it depends on the kind of work you’re trying to do. A good rule of thumb might be if your work is closer to mathematics and statistics, R is probably your best bet. If your work is closer to programming, go with Python, and if you’re building enterprise-size products, take a look at Java. That said, many data scientists are increasingly turning to combinations of languages that allow them to take advantage of the individual strengths of each.

R

Great For:

  • In-Depth Statistical Analysis. Given that R was developed by and for statisticians, it’s no surprise that R is ideally suited to in-depth statistical analysis, whether you’re working with sensor data from an IOT device or elaborate financial models. What’s more, it’s very well supported by the statistics community through the CRAN repository, which contains literally thousands of packages that enable you to perform more elaborate analysis and visualization tasks.
  • High-Quality Reporting. Well-produced images convey more than numbers alone, and R places a great emphasis on easily producing high-quality graphs and charts. On top of that, its basic capabilities can be extended with a number of packages, including ggplot2, ggvis, googleVis, and rCharts. The Shiny framework also allows you to turn those visuals into interactive web applications.

Not Great For:

  • Performance. R was designed with data scientists in mind, not computers. As such, R is considerably slower than Python or Java.
  • Creating large-scale data products. In these instances, data scientists will often prototype in R and then switch to a more flexible language like Java or Python for actual product development.
  • Ease of Learning. If your background is in math or statistics, R’s array-oriented syntax can make implementation relatively straightforward. If you have programming experience, however, this approach is likely to seem counterintuitive.

Java

Great For:

  • Excellent Performance on Large-Scale Systems. Java’s speed makes it best for building large-scale systems. While Python is significantly faster than R, Java provides even greater performance than Python. Speed and scalability are why Twitter, LinkedIn, and Facebook rely on Java as the backbone of their data engineering efforts.
  • Faster Development Time. The Java Virtual Machine (JVM) is a great environment for developing custom tools quickly. The programming language Scala runs on JVM and is popular with data scientists for its combination of object-oriented and functional programming.

Not Great For:

Statistical modeling and visualization. Between these three languages, Java is definitely the least suited to hardcore analysis. Though packages do exist to add some of these functions, they’re neither as advanced nor as well supported as the ones you’ll find for Python and R.

Python

Great For:

  • Workflow Integration. Python’s flexibility makes it a popular choice for developers who need to apply statistical techniques or data analysis in their work, or for data scientists whose tasks need to be integrated with web apps or production environments. If you’re looking for a single tool to manage your entire data-related workflow, Python is a great option.
  • Machine Learning. The combination of specialized machine learning libraries (like scikit-learn, PyBrain, and TensorFlow) and general purpose flexibility makes Python uniquely suited to developing sophisticated models and prediction engines that plug directly into the production system.

Not Great For:

  • Highly specialized data tasks. Though the Python community is catching up, there are still hundreds of R packages that have no Python equivalents. If you’re looking for very specific capabilities, you might be better off with R.

Hiring a data scientist?

Now that you understand the differences between some of the major languages in data science, who do you need to set up and maintain your data infrastructure? Data scientists come from a variety of backgrounds. Some specialize more in performing statistical analysis, while some are more focused on building products that interface directly with production systems. Explore data scientists on Upwork.

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