I am a highly skilled data scientist and statistician with over 13 years of experience as a PhD-level researcher. I have a proven track record of successfully delivering efficient and precise data analytic solutions to a wide range of clients in health, psychology, epidemiology, and social sciences. My expertise spans data analysis (basic to advanced), statistical computing (R, SAS, Python, SQL), and data visualization.

⭐Here's the services I can bring to your project:⭐

✅ Data Analysis: Predictive analytics, regression (linear, logistic, negative binomial, Poisson), correlation, randomized-controlled trials & quasi-experimental propensity score matching, simulation studies, power analyses, machine learning, confirmatory & exploratory factor analysis, hierarchical linear modeling/multi-level modeling (MLM), longitudinal MLM analysis, path analysis, scale development, reliability & validity assessment, analysis of variance, Meta-analysis.

✅Statistical Computing: R, RStudio, R markdown, Quarto, Dashboards, SAS (certified), SQL, Microsoft Excel/VBA/SSRS, Mplus, Comprehensive Meta-Analysis, SPSS, Tidyverse, metafor, lme4, lmer, compute.es, MAd.

✅ Data Visualization: Creating insightful and engaging data dashboards, reports, and visualizations using tools like ggplot2, R Quarto, R Markdown, Power BI, and Shiny R.

✅ Automated Reporting: Developing automated business and data reports that can be quickly updated on a monthly, weekly, or daily basis.

✅ Academic Research: Experienced in conducting academic research, proofreading, grant writing, and article writing (over 70 peer-reviewed publications).

⭐What sets me apart:⭐

✅ Client-Focused Approach: I prioritize understanding my clients' needs and delivering tailored solutions that exceed expectations.

✅ Strong Communication & Collaboration: I am highly responsive and value open communication, ensuring clear and collaborative working relationships.

✅ Problem-Solving Expertise: I am committed to finding creative and effective solutions to even the most complex data challenges.

✅ Commitment to Quality: I am dedicated to delivering high-quality work and ensuring my clients are completely satisfied.

Select testimonials (on Upwork; see profile here: https://www.upwork.com/freelancers/~0158a13211ff7cf0ea?mp_source=share ):

⭐⭐⭐⭐⭐ "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