MS Scholar in Mathematics & Statistics | 6+ Years Teaching & Problem-Solving Experience Need accurate solutions for math problems, SPSS/Excel analysis, or MATLAB simulations? I help students & researchers solve them step-by-step — fast, clear, and 100% reliable. 🔧 Services I Offer: 📘 Mathematics: Calculus, Linear Algebra, Probability, Discrete Math 📊 Statistics: Hypothesis Testing, ANOVA, Regression ⚙️ MATLAB/Simulink: Simulations, Modeling 🧠 Data Analysis: Python, R, Excel, Stata 📝 Exam & Assignment Help: Homework, Quizzes, Projects 🌟 Why Work With Me? 🎓 MS in Math & Stats – Precise and academic-level problem solving 👩‍🏫 6+ Years Experience – Helped 500+ students worldwide 🧩 Concept Clarity – You learn, not just get answers ⏱️ Reliable & Quick – Timely delivery with detailed explanations 📄 Plagiarism-Free – 100% original solutions, with citations if needed 💬 Let’s Get Started! Working on an urgent project or upcoming exam? Send me your task details — I respond within minutes and can start right away!

Do you need someone who can handle your entire data journey? From collecting data, to analysing it, to automating the processes around it, and finally presenting it in a stunning, interactive dashboard? You've found that person. I'm Catherine, a data analyst and statistician with deep expertise across the full data pipeline. I don't just run numbers. I help you collect, clean, analyse, automate, and visualise your data in a way that drives real decisions. What I bring to your project: 📊 Statistical analysis & research: Hypothesis testing, regression, SEM, survival analysis, psychometrics/scale validation, and econometric modelling using SPSS, R, Stata, Python, Jamovi, and JMP. I've contributed to peer-reviewed journal publications through my statistical work on surgical databases (NSQIP). 🔍 Qualitative research: Thematic and content analysis using NVivo, MAXQDA, and Atlas.ti for interviews, focus groups, and open-ended survey data. ⚙️ Automation & workflow design: I build end-to-end automated pipelines using Make and Google Apps Script, including integrations with Stripe, Google Forms, Google Sheets, landing pages, and more. Recent clients have seen their manual data workflows fully automated. 📈 Dashboards & data visualisation: Interactive executive dashboards in Power BI and Looker Studio, tailored for marketing teams, operations, healthcare, and finance. I turn raw data into clear, compelling visual stories. 📋 Survey design & data collection: End-to-end survey projects using Google Forms, Typeform, and Qualtrics, including automated data pipelines from form submission to clean, analysis-ready datasets. I've worked across yachting, healthcare, finance, and academia, and I also offer tutoring in SPSS, R, and Stata for students and professionals. Let's talk about how I can support your project.

🏆 TOP RATED ON UPWORK |⭐ 5-Star Ratings | Data Analytics and Predictive Modeling|💎MASTER/PHD THESIS Help |✅Statistics, Meta-analysis✅ R, SPSS ✅Data Science, Machine Learning Models | ✅R Master, Large Survey Data and Regression Analysis |🏆PhD and seven years of experience. ABOUT ME: 🏆 TOP RATED status (TOP 10% TIER on UPWORK) 💎Provide effective help for MASTER/PHD THESIS 🏆More than 30 published research manuscripts in ISI-indexed journals. 💎Seven years of experience in research designs, biostatistics, data analysis, and clinical Research With proven tracked records of success in Upwork (Top Rated), overwhelmingly positive feedback with 5* ratings, a PhD, and experience, I can definitely help you bring out the highest quality, great results for your research and achieve your business goals. Current Roles: - Associate professor at the University of Hertfordshire - GAF - Lead biostatistician at the HIV Clinic, Cairo University. - Associate editor for BMC trials Key areas of expertise: • Statistical analysis using IBM SPSS, STATA, R Studio, Excel, and JASP. • Statistical modelling : Skilled in utilizing advanced statistical techniques such as linear mixed effects models, bootstrapping, and time-series analysis for complex data interpretation. • Survey Psychometrics: Proficient in analyzing psychometric instruments to ensure reliability and validity in survey research. • Predictive Modeling and Meta-Analysis: Advanced experience in predictive modeling and conducting meta-analyses to support research and clinical decision-making.

Do you need help analysing public health or research data and presenting the results clearly? I work in public health research, biostatistics, and epidemiology, and I have over 3 years of experience working with research and health related data. I support researchers, NGOs, and students by helping them analyse data correctly and explain the results in a clear and simple way. I work with tools such as R, Stata, SPSS, ATLAS.ti, SAS, EViews, Excel, Tableau, and REDCap, depending on the needs of the project and the type of data involved. Here is what I can help you with: ✅ Data cleaning and data preparation ✅ Biostatistics and epidemiological analysis ✅ Public health and medical research analysis ✅ Survey data analysis ✅ Clinical trials data analysis ✅ Survival analysis, including Kaplan Meier curves and Cox regression ✅ Systematic reviews and meta analysis ✅ Tables, figures, and clear result summaries I communicate clearly, ask the right questions, and keep the process simple and organised. If you already have data, I can start right away. If you are still unsure about the analysis, I can help you think it through step by step. I will be happy to discuss your project and see how I can help.

I’m a Japanese freelancer with a strong focus on data analysis and data-driven problem solving, supported by hands-on experience with Python, R, and Microsoft tools.

I design and validate quantitative systems for trading and high-stakes decision-making. I combine machine learning, optimization, and applied mathematics to build models that remain robust under uncertainty — not just in-sample. Core work: • Systematic trading strategies (design, backtesting, robustness) • Forecasting and optimization systems with real business impact • Simulation-based risk models (Monte Carlo, copulas) With a strong consulting background, I deliver decision-ready systems — not just analysis. ━━━━━━━━━━━━━━━━━━━━━━━ 🔹 What I can help you with 💹 Trading & Quant Systems • Strategy design and validation (Python, R, TradeStation / MultiCharts) • Walk-forward testing, regime analysis, robustness checks • Portfolio construction and risk-adjusted performance • Signal development and execution logic 📈 Forecasting & Optimization • Demand forecasting (statistical + ML approaches) • Pricing and revenue optimization • Scenario modeling for business planning • Experimentation design (e.g., geo-based lift tests) ⚠️ Risk Modeling & Simulation • Monte Carlo simulation frameworks • Copula-based dependency modeling • Stress testing under different regimes • Decision-making under uncertainty ━━━━━━━━━━━━━━━━━━━━━━━ 🔹 How I work Most models fail because they don’t generalize. My approach: • Focus on out-of-sample performance and robustness • Build scalable, testable systems — not one-off analyses • Translate outputs into clear decisions and business impact ━━━━━━━━━━━━━━━━━━━━━━━ 🔹 Tools & Stack • Python, R (advanced modeling, simulation, ML) • TradeStation, MultiCharts (trading systems) • R Shiny (interactive decision tools) • AWS (deployment and scaling) ━━━━━━━━━━━━━━━━━━━━━━━ 🔹 Background • MSc Machine Learning — Imperial College London • MSc Applied Mathematics — University of Edinburgh • MSc Mathematical Economics — Paris 1 Panthéon-Sorbonne University • 5+ years experience across finance, energy, and data-driven consulting ━━━━━━━━━━━━━━━━━━━━━━━ If you’re working on a trading, forecasting, or risk-critical problem, feel free to reach out. I’m happy to quickly assess your case and suggest a concrete approach.

If you're a researcher, data consultant, finance professional, or founder who needs to turn analysis into something people can actually use and interact with — I build that. I specialize in R Shiny, PyShiny, and Streamlit applications: interactive dashboards, automated reporting pipelines, and data-driven web apps tailored to your domain. Whether you need to share clinical outcomes with stakeholders, give your financial models a live interface, turn your research into an interactive tool, or ship an analytics product without hiring a full dev team — I've done exactly that. Over 3+ years I've helped: → Researchers & academics turn datasets and statistical models into shareable, interactive web apps → Healthcare & pharma consultants automate monthly reporting and build patient-facing dashboards → Finance professionals & fintech founders build portfolio trackers, financial model interfaces, and live market dashboards → Data-driven founders prototype and launch analytics products fast, without frontend complexity One client put it simply: "Ahmed walked me through every stage of the report production process and even explained what we might measure more to make business decisions easier." What I deliver: ☑ Custom R Shiny, PyShiny & Streamlit dashboards and web apps ☑ Financial model interfaces, portfolio trackers & market dashboards ☑ Automated reporting pipelines (R Markdown, Quarto, Python) ☑ Statistical and scientific data visualizations ☑ Internal analytics tools for teams and consultants ☑ Enterprise production apps SaaS Platforms ☑ Data pipeline design with SQL, Power Query & Python I work best on projects where the data is rich but the output needs to be clear, interactive, and built to last — not a one-time PDF or static spreadsheet. If that sounds like your project, send me a message with a brief description and I'll tell you exactly how I'd approach it.

A data analyst with a strong background in mathematics and statistics, I specialize in Excel, Power BI, Google Sheets, and R for data cleaning, analysis, visualization, and predictive modelling. My focus is on turning raw and messy datasets into clear, actionable insights and dashboards that help you track KPIs, spot trends, and make smarter, data-driven decisions. I also provide training in Excel and Tableau, helping individuals and teams gain the skills to organize, analyze, and visualize data effectively. I am detail-oriented, highly responsive, and committed to delivering premium services with rapid turnarounds. Here’s what I can do for you: • Data Preparation & Cleaning: Organizing, validating, reconciling, and transforming data for accurate analysis. • Custom Reporting & Dashboards: Building Excel, Google Sheets, Power BI, or Tableau dashboards that track KPIs, productivity, sales, and marketing metrics. • Data Analysis & Insights: Identifying trends, patterns, and opportunities, and presenting findings in simple, easy-to-understand reports. • Predictive Analytics & Modelling: Using R, Python (Pandas), and Excel to forecast trends, growth models, and outcomes. • Excel & Google Sheets Mastery: Advanced formulas, lookups, pivot tables, automation (VBA/Macros), and multi-sheet reporting. • Visualization & Storytelling: Creating interactive dashboards, charts, sparklines, and visual summaries that make data engaging and decision-ready. Why Clients Choose Me • 6+ years of proven experience in data analysis, reporting, and business intelligence solutions. • Skilled in Excel automation, dashboard design, KPI tracking, and reporting solutions that save time and improve accuracy. • Experience with SQL, R, and Python for data manipulation, reconciliation, and advanced analysis. • Trusted to deliver timely, accurate, and actionable insights that help businesses improve strategies and performance. • Known for being detail-oriented, proactive, and clear in communication, ensuring complex findings are translated into practical recommendations. Let’s discuss how I can help you transform your data into reliable insights, powerful dashboards, and smarter decisions.

I provide rigorous statistical architecture and methodological expertise, bridging the gap between academic rigor and applied data science. With over 16 years of experience, 70+ peer-reviewed publications (13,000+ citations), and a background as a Stanford Medical School and Palo Alto VA Postdoc, I serve as a lead statistician and program evaluator. Over the course of my career, I have architected high-level statistical modeling for the US Veterans Health Administration (VHA), the Naval Health Research Center, university research labs, and private corporations. I do not just run basic correlations—I build complex (longitudinal) models that isolate the true, statistically significant signal in your data, ensuring your findings are mathematically transparent and completely defensible. WHO I PARTNER WITH: ➤ Principal Investigators & Academic Institutions: You are leading research that requires flawless methodology. As the author of widely used R packages (compute.es, MAd), I serve as a Methodological co-author and/or lead statistician, handling the complex statistical architecture to ensure your analyses meet the highest standards of peer review. ➤ Biotech, Pharma & Healthcare Organizations: You need to translate raw data into robust Real-World Evidence (RWE) or evaluate program efficacy. I handle data discovery, complex modeling, and build custom, fully automated R/Quarto pipelines that ingest large datasets and auto-generate reproducible, high-quality reports. ➤ Health-Tech & Startups: You have longitudinal user data but lack the scientific infrastructure to understand your intervention's true impact. I engineer the underlying algorithms (mixed-effects models, N-of-1 experimental tracking), and build interactive web dashboards that visualize outcomes instantly. ➤ AI & Data-Driven Startups: You have massive amounts of unstructured qualitative data (user feedback, session transcripts) and need it converted into rigorous, statistically valid metrics. I act as an LLM Integration Architect, writing automated scripts that pass unstructured text through AI APIs to extract thematic schemas with psychometric-level reliability, turning messy data into clean, actionable databases. THE DIFFERENTIATOR: ✔ Scientific Authority: I am a widely published researcher who translates complex stats into clear, strategic directives that executives, grant committees, and scientific reviewers trust. ✔ End-to-End Implementation: I build complete data pipelines—from initial data acquisition and modeling strategy, all the way to automated reports, deployed dashboards, white papers, or peer-reviewed publications. ✔ Mathematical Transparency: Absolutely no "black-box" modeling. I rely purely on deterministic, peer-reviewed statistical architecture. ✔ 100% Top-Rated Success: A proven track record of delivering rigorous, high-level statistical modeling across academia, government, and the private sector. SELECT TESTIMONIALS: ⭐⭐⭐⭐⭐ "Aaron is the best statistician I ever collaborated with in my 20-year research career" -Grace W. | PhD & Assistant Professor ⭐⭐⭐⭐⭐ "Aaron is one of the most skillful statistical consultants that I know and has consulted with our labs for several years" -Christoph F. | PhD & Full Professor TECHNICAL CORE: • Methodology: Predictive modeling, Longitudinal Mixed-Effects Models (LMM), Meta-Analysis, N-of-1 Single-Case Experimental Analytics, Epidemiological Research, Propensity Score Matching, Factor Analysis, Power Simulations. • Infrastructure & Delivery: R, Python, Quarto, Shiny, SAS, SQL, Interactive Dashboards, Power BI / Tableau, LLM API Integration (Claude/OpenAI). • AI & Psychometrics: Automated Qualitative Data Engineering, LLM Thematic Binning, Exploratory/Confirmatory Factor Analysis, Construct Validation. • Statistical Packages: Tidyverse, lme4, metafor, compute.es, MAd. Are you ready to turn your raw data into defensible scientific assets? Please click "Invite to Job" to discuss your project.

"In addition to his technical prowess, Hector is a brilliant person who thoroughly impressed me with his creative thinking/problem solving skills. I'd give him 100 stars if Upwork would let me, and I will definitely hire him again when an opportunity arises."- Luciano P. Hi! My name is Hector and I'm a specialist in everything data-related. I'll design pipelines for you that will: * Get you data from anywhere * Clean and process raw, unstructured data (whether it's image/audio/text/excel/SQL db) * Analyze your data and extract powerful insights from it (statistical analysis and stunning visualizations included) * Build predicting models or recommendation systems with AI and modern Machine Learning tools * Deliver you data products in the form of reports, dashboards, or web apps for your regular, day to day needs Lets take it to the next level! [*A discount is offered for extended work].