I am an applied mathematician with over 25 years of experience dedicated to research, complex problem-solving, and the development of rigorous analytical models. My expertise lies in translating real-world problems—whether financial, engineering, or data optimization—into exact mathematical formulations and efficient computational algorithms. Unlike purely probabilistic approaches, I focus on deterministic solutions, structuring logical code based on analytic geometry, calculus, combinatorial analysis, and precise statistical filters. My areas of expertise include: Mathematical Modeling & Algorithms: Development of algorithmic logic and combinatorial filters for large data volumes. Quantitative & Statistical Analysis: Massive processing of time series and extraction of precise "signals" within high-noise environments. Stochastic Optimization & Risk Analysis: Application of advanced models for supply chains and variable environments. Rigorous Technical Writing: Creation, verification, and structuring of mathematical documents and proofs under academic standards (IEEE) using LaTeX. Tech Stack: Languages: Python (Pandas, NumPy, SciPy), R, C++, SQL. Databases & Visualization: Power BI, Relational databases, and NoSQL. Scientific Tools: LaTeX for rigorous documentation. If your project requires a level of mathematical precision that goes beyond conventional programming—whether for big data analysis, deterministic algorithm structuring, or academic validation—I am at your disposal to provide exact and efficient solutions. 3. Skills Ensure you have these tags selected on your profile: Applied Mathematics, Quantitative Analysis, Algorithm Development, Python / C++ / R, Statistical Modeling, Data Science, LaTeX, Big Data.

I am a Data Scientist and Economist specialized in building practical data systems for business decision-making. My work combines data analysis, predictive modeling, automation, dashboards, and data product development. I help companies clean, structure, analyze, and visualize their data so they can understand performance, forecast trends, automate workflows, and make better decisions. I work with SQL, Python, pandas, statistical models, predictive models, Power BI, Airtable, Softr, APIs, web scraping, and workflow automation tools. I have experience building end-to-end data pipelines, business dashboards, market intelligence tools, financial and economic models, and internal apps for small and mid-sized businesses. Some of my recent work includes: Data pipelines and scraping systems for market intelligence and vehicle finance data. Predictive models for credit demand, sales performance, campaign selection, and business forecasting. SQL-based data analysis, data cleaning, database structuring, and reporting automation. Power BI dashboards connected to SharePoint, cloud data sources, and optimized datasets. Airtable and Softr apps for ERPs, client portals, task management systems, user roles, permissions, and multi-tenant workflows. Network and node analysis for influencer mapping, campaign strategy, audience segmentation, and community detection. Python tools for index calculation, economic indicators, financial analysis, and automated reporting. I have worked as a consultant for institutions such as the Inter-American Development Bank and the Government of Mendoza, where I helped redesign and automate parts of the Consumer Price Index calculation process using Python. I also have experience in data products, analytics, machine learning, statistical modeling, WordPress dashboards, and data-driven content systems. My background in economics allows me to understand the business logic behind the data, not just the technical implementation. I can work from raw data to final deliverable: defining the problem, structuring the database, writing the code, building the model, designing the dashboard, and explaining the results clearly. I can help you with: SQL queries, database cleanup, and data modeling. Python scripts, automation, APIs, and scraping pipelines. Predictive models, forecasting, regressions, and statistical analysis. Power BI dashboards and reporting systems. Airtable and Softr apps, portals, workflows, and permissions. Business intelligence, market research, and financial/economic analysis. Data product development from idea to working MVP. I am fluent in English and Spanish, and I work well with both technical and non-technical teams. My focus is always on delivering useful, reliable, and well-documented solutions that save time, improve visibility, and support better decisions.

I am Dr. Raymond Musyoka, a PhD-trained Biostatistician with over 20 years of experience in statistical analysis, epidemiology, and data science, supporting research across academia, public health institutions, and international organizations. My career began with hands-on experience in data management, survey implementation, and statistical support, where I was involved in designing data collection tools, developing databases, supervising data entry processes, and ensuring data quality through rigorous validation procedures. Over time, I progressed into advanced analytical roles, leading complex statistical modeling, research design, and high-impact data-driven decision-making projects. I hold a PhD in Biostatistics (University of KwaZulu-Natal, South Africa), a Master’s degree in Biostatistics, and a Bachelor of Science in Mathematics (First Class Honors). What I Do I provide expert consultation on a wide range of statistical and data science needs, including: Statistical Analysis & Modeling Regression analysis (linear, logistic, multivariate) Survival analysis (Cox models, Kaplan–Meier) Generalized Linear Models (GLM) & GAM Time series and predictive modeling Survey-weighted analysis (DHS, AIS, complex designs) Data Management & Systems Database design and development Data cleaning, validation, and quality assurance Development of coding manuals and QA workflows Oversight of data entry systems using SAS and other tools Research Design & Support Study design and methodology development Development and testing of data collection tools Experimental and survey design Statistical reporting and interpretation Publication-ready outputs Software & Tools R, SAS, Stata, SPSS, Python Power BI, Excel AI-assisted statistical analysis How I Add Value Translate complex data into clear, actionable insights Apply appropriate and rigorous statistical methods Ensure high-quality, reproducible analysis Support end-to-end research workflows Provide clear communication for non-technical stakeholders Professional Experience Highlights Supported Ministries of Health and international research institutions Contributed to national HIV/AIDS program evaluations Worked with large-scale survey data (DHS, AIS) Delivered training and capacity building in data analysis Currently contributing as an AI Training Expert in Statistics Why Work With Me I bring a unique combination of: ✔ Strong academic background (PhD level) ✔ Real-world public health experience ✔ Advanced statistical and data science skills ✔ Commitment to delivering high-quality, timely work Availability I am available for: Statistical consulting Data analysis projects Research collaboration Training and mentorship I am passionate about helping researchers and organizations achieve their objectives through data-driven solutions and would be glad to support your project.

I possess a Doctorate in Biostatistics and am adept in quantitative analysis techniques such as data manipulation, modeling, visualization, and report generation. My areas of interest include Clinical Trials, Longitudinal Data Analysis, and Big Data Analysis. Areas of Experience * Signal Processing * Statistical Data Analysis * Sample Size Calculation * Machine Learning * Big data Analysis * Clinical Trials * Longitudinal Data Analysis * Multivariate Analysis * Design of experiments * Dose-Finding * R projects * SAS projects * Data Science * Mathematics * Categorical Data Analysis * PASS * Network Meta Analysis * Meta Analysis * Power BI

Helping Businesses Make Smarter Decisions & Build Secure Cloud Systems I’m a dual‑specialist in Data Analysis and Microsoft Cloud Engineering, helping organizations turn raw data into insight and secure their digital environments with confidence. Whether you need rigorous statistical analysis or expert support across Microsoft 365 and Azure, I bring a blend of analytical depth, technical precision, and real‑world experience. My work spans two core areas—each backed by years of hands‑on delivery, research, and stakeholder‑facing impact. 📊 Data Analysis & Econometrics I help organizations uncover insights, validate assumptions, and make evidence‑based decisions. With advanced expertise in STATA, econometric modelling, and statistical research, I deliver clean, reliable, and actionable analysis. What I offer: • Statistical analysis (regression, hypothesis testing, time series, multivariate methods) • Econometric modelling for policy, social, and economic research • STATA programming, data cleaning, merging, and transformation • Survey data analysis, reporting, and visualization • Research support for academic, NGO, and private‑sector projects My work has supported published research, large‑scale education programmes, and international development initiatives. ☁️ Microsoft 365, Azure & Cloud Security I help businesses modernize, secure, and optimize their cloud environments. From email migrations to identity protection and Azure security architecture, I ensure your systems are resilient and future‑ready. What I offer: • Microsoft 365 administration, governance, and optimization • Email migrations (Google Workspace, Exchange, IMAP, legacy systems) • Microsoft Defender & security hardening • Conditional Access, MFA, identity protection • Azure security architecture & workload protection Clients trust me for clear communication, fast delivery, and solutions that prioritize security and reliability. Why Work With Me I bring a rare combination of analytical rigor and cloud engineering expertise, allowing me to approach problems from both a data‑driven and systems‑driven perspective. I’m detail‑oriented, process‑focused, and committed to delivering work that stands up to scrutiny. Ready to get started? Whether you need deep statistical analysis or expert Microsoft cloud support, I’d be happy to help. Send me a message and let’s discuss your project.

Are you facing a complex dissertation, struggling with data analysis, or need publication-ready research? I deliver rigorous academic research and writing that earns top grades, successful defenses, and journal publications. WHAT I DELIVER: • Complete dissertations (proposal through final submission) • Quantitative analysis (SPSS, PLS-SEM, statistical modeling) • Qualitative research (thematic analysis, coding, NVivo) • Literature reviews and research proposals • Academic editing and formatting (APA, Harvard, Chicago) MY TRACK RECORD: • PhD-qualified with 14+ years of professional research experience • 500+ successful academic projects with 95% Job Success Score • Top Rated status on Upwork (consistent 5-star reviews) • Specialization in business, social sciences, and STEM research • Average project completion: on-time or early delivery WHY CHOOSE ME: Your research deserves an expert who understands methodology, academic rigor, and publication standards. I don't just write—I ensure your work meets the highest academic standards and passes committee scrutiny. READY TO DISCUSS YOUR PROJECT? Message me with your research topic, deadline, and specific requirements. I offer free consultations to ensure we're a perfect fit.

⭐ Top 1% of Data Science talent on Upwork ⭐Trusted by 50+ clients worldwide⭐ 120+ projects and 7+ years of experience⭐Clear communication, transparent pricing, and top quality. I have worked across different sectors, including: 1.1 InnoSight Financial Planning (USA): I designed an optimal portfolio based on back-projected AI-powered financial indices. 1.2 Aeuthux (USA): I led a team of data scientists to build a web platform supporting investment decision-making. 1.3 Placeholder LLC (USA): I built a trading bot using machine learning deployed on AWS to operate in cryptocurrency markets. 1.4 ARCA-X (QATAR) I wrote research papers on the financial structure of non-central banking systems.

📢 Graduate with a major in statistics who is skilled in data analysis and interpretation of results. 📢 Experienced in academic writing in several scientific fields (Biostatistics, Education, Psychology, Economic, Healthcare, and other fields) 📢 Methods of data analysis that I am capable of performing: ✔ Descriptive Analysis, Chi-square test, ANOVA test, and t-test ✔ Regression Analysis (Multiple Regression Analysis, Binary Logistic Regression, Ordinal Logistic Regression, Multinomial Logistic Regression, Panel Data regression, and Regression with Mediation and Moderation variable) ✔ Path analysis and Structural Equation Model (SEM) using AMOS and SmartPLS ✔ Cluster Analysis (Hierarchical Clustering and non hierarchical clustering/K-means clustering) ✔ Fuzzy method and many more 📢 Data analysis software that I prefer: ✔ R ✔ SPSS ✔ E-Views ✔ AMOS and SmartPLS ✔ Minitab ✔ Excel ✔ Stata 📢 Academic writing and consultation: ✔ Thesis based on quantitative data (no qualitative data) ✔ Statistical Methods ✔ Learn SPSS or another software that I've mentioned. 📢 WHY CHOOSE ME? ✔ Responsiveness: You can reach me anytime, I have the Upwork app on my phone to make it easy to stay in contact with my client. ✔ Responsibility: Completing the work before the deadline and making it available for revision ✔ Good communication skill ❤ One of the reviews by the client: "This freelancer is very professional and meets the deadline perfectly."

✅I help medical researchers and PhD candidates publish in high-impact journals through rigorous biostatistical analysis and scientific writing without AI-generated content📊 📈**What I Deliver:** With 100% Job Success and expertise in clinical trial design, meta-analysis, and regulatory compliance, I write medical research papers for PhD, Masters and Undergraduate degrees. And analyze raw medical data transforming them into publication-ready insights. My clients include researchers at Johns Hopkins, Oxford, and UT Austin, with manuscripts published in peer-reviewed journals. ✅ **Core Services:** 👉**Academic Research Support** • Research paper writing & journal submission support • PhD thesis statistical analysis & manuscript preparation • Dissertation data analysis (masters & undergraduate) • Meta-analysis & systematic reviews (PRISMA guidelines) 👉**Clinical Research & Trials** • FDA/NIH submission-ready statistical analysis • Randomized controlled trials (RCT) design & analysis • Survival analysis, power analysis, ROC curve interpretation • HIPAA-compliant IRB protocol support 👉**Advanced Analytics** • Bayesian statistics, generalized linear models (GLM) • Logistic regression, mixed-effects modeling • AI/ML diagnostic evaluation • Data cleaning, visualization & interpretation 🌠💻🖲**Tools & Software:** R, SAS, STATA, SPSS, Python, MATLAB, RevMan, NVivo, Excel (advanced modeling) ❤**Why Researchers Choose Me:** ✔ 1. 95% Revision-Free Success Rate** — Clients submit manuscripts with minimal editorial changes ✔2. Regulatory Expertise** — HIPAA-certified, ORCID registered, experienced with EMA/FDA standards ✔3. PhD-Level Rigor** — Specialized in epidemiology, oncology data, and observational studies ✔4. Collaborative Approach** — Clear communication throughout every project phase ✔5. On-Time Delivery** — 100% track record for urgent deadlines 👌**Recent Client Feedback:** *"Samuel delivered flawless statistical analysis for our NEJM submission. His expertise in PRISMA meta-regression and FDA compliance saved us 4 months. Will exclusively use him for Phase III trials."* — Johns Hopkins Clinical Researcher 🐾**My Process:** 1. **Free Consultation (15 min)** — Discuss your research objectives, timeline, and compliance requirements 2. **Customized Analysis Plan** — Detailed methodology, deliverables, and publication strategy 3. **Rigorous Execution** — Statistical analysis with documentation for peer review 4. **Publication Support** — Revision assistance and reviewer response preparation 🚀**Current Availability:** Limited slots for March 2026 projects. ✔**Ready to Advance Your Research?** Click "Invite to Job" to discuss your project requirements and publication timeline.

𝗕𝘂𝘀𝗶𝗻𝗲𝘀𝘀 𝗮𝗻𝗱 𝗗𝗮𝘁𝗮 𝗔𝗻𝗮𝗹𝘆𝘀𝘁 with 7 𝗬𝗘𝗔𝗥𝗦 𝗢𝗙 𝗘𝗫𝗣𝗘𝗥𝗜𝗘𝗡𝗖E. I provide e-commerce businesses with data-driven insights and recommendations. Top Skills: Data analysis & visualization, Attention to Detail, Collaboration, Communication Why choose ME? ✨Upwork clients said so! (Top rated, five-star rating, proven track record) ✨Background in e-commerce, finance, bookkeeping, and economics ✨Attention to detail - I triple check everything! ✨Detailed updates and documentations (screenshots, Loom videos, etc.) ✨Free consultations for new clients What I can DO: 1. Data Entry and Management 🟢Pull data from different sources (Shopify, Facebook Ads, Google Analytics, Hubspot CRM) 🟢Enter and update data accurately 🟢Clean dataset (blanks, missing values, errors) 2. Data Analysis and Visualization 🟢 Merge different workbooks or spreadsheets 🟢 Create pivot tables and calculated fields 🟢 Use advanced formulas (sumifs, vlookup, xlookup, index-match, array, etc.) 🟢 Automation (Macros, App Script, Power Query) 🟢 Data visualization (charts, graphs, tables, dashboard) 🟢 Data analysis (Variance analysis, P&L, Descriptive statistics, Regression) 3. Create templates 🟢Automatic and dynamic 🟢100% User-friendly 🟢With user manual (text/video) 🟢Clean and professional-looking while following branding 4. GoHighLevel 🟢Set-up CRM 🟢Create workflows to automate tasks 🟢Design funnel and landing page 🟢Other integrations Let's work together and get SHEET done! Bianca ✨