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With a Ph.D. in Industrial/Organizational Psychology and a Master's in Applied Statistics and Data Analytics, I bridge data science and organizational strategy. I specialize in turning complex, multi-source data into clear, defensible insights that support decision-making across business, HR, research, and financial contexts. I've worked with performance, sales, engagement, and survey datasets to develop KPIs, surface patterns, build predictive models, and automate reporting pipelines that produce clean, branded outputs. I also do independent validation and methodological review, pressure-testing survey instruments, models, and AI-generated data to tell clients honestly where the work holds up and where it doesn't. My toolkit spans data cleaning, visualization, and predictive modeling in Python, R, SQL, and Excel, with deep experience in survey design, psychometrics, and text analytics. I can help you with: *Data Cleaning, Validation & Integration – Building reliable, analysis-ready datasets from multiple sources. *Validation & Methodological Review – Independent benchmarking, psychometric and content validation, and honest assessment of frameworks, assessments, and meausres. *KPI & Dashboard Development – Defining and visualizing performance metrics that align with strategy. *Survey Design & Workforce Analytics – Designing and analyzing surveys for employee experience, leadership, and DEI. *Predictive & Statistical Modeling – Regression, SEM, and machine learning for forecasting and insight. *Data Storytelling & Strategy – Turning analytics into narratives and recommendations for executives and teams. My goal is simple: to make analytics practical, reliable, and strategic, helping organizations turn data into smarter action.

I am a dedicated and skilled Systematic Review, Meta-analysis, Network Meta-Analysis, Machine Learning including a predictive Model (LSTM, Regression, Logistics GB Algorithm), Time series Modelling, Panel Data Analysis, Econometrics expert with five years of enriching experience in the field of research and data analysis. My journey in the realm of systematic reviews, meta-analyses and machine learning has been marked by a fervent passion for unraveling complex scientific queries and synthesizing extensive volumes of data into meaningful insights. In my dynamic career spanning half a decade, I have delved deep into the intricate world of systematic reviews, meta-analyses and Machine learning. My expertise lies in meticulously designing and conducting comprehensive data analysis and report writing, employing rigorous methodologies to collect, assess, and interpret a plethora of research studies. My goal is to unearth patterns, trends, and discrepancies in existing research, contributing significantly to the advancement of various scientific domains. Over the years, I have spearheaded numerous research projects, where I have demonstrated my prowess in synthesizing diverse data sets. My systematic reviews have not only provided a panoramic view of existing research but have also paved the way for groundbreaking meta-analyses, amalgamating quantitative data from multiple studies to draw statistically robust conclusions. One of my significant accomplishments includes the successful completion of a meta-analysis that elucidated the efficacy of a groundbreaking medical intervention. This analysis, widely cited in academic circles, has played a pivotal role in shaping clinical guidelines and has been instrumental in guiding healthcare professionals worldwide. Methodological Proficiency: My expertise encompasses a wide array of systematic review methodologies, ranging from Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines to Cochrane Collaboration standards. I am adept at employing statistical tools and software, ensuring the precision and accuracy of my meta-analytical findings. Additionally, I possess a keen eye for detail, enabling me to critically appraise studies, identify biases, and offer nuanced interpretations. Contributions to the Academic Community: Beyond my individual research endeavors, I am passionate about knowledge dissemination. I have actively contributed to the academic community by publishing my findings in reputable journals, thereby facilitating the exchange of ideas and encouraging further exploration within the scientific community. I have also served as a mentor, guiding aspiring researchers in the nuances of systematic reviews and meta-analyses. Future Endeavors: As I look forward, my aim is to continue my scholarly pursuits, delving into cutting-edge research questions and collaborating with experts from diverse fields. I aspire to further refine and expand my methodological toolkit, exploring innovative approaches that push the boundaries of systematic review and meta-analysis methodologies. In essence, my journey as a Systematic Review and Meta-analysis expert is defined by a relentless pursuit of excellence, a commitment to scientific rigor, and a genuine passion for unraveling the mysteries of the research landscape. I am excited about the limitless possibilities that the future holds and am dedicated to making enduring contributions to the world of academia and scientific inquiry. Some of the research i have done include systematic review and about analysis in medical field, business, management, accounting and agriculture. I have full access to WOS, Scopus, Medline, PubMed and Clinical trial website where i obtained the articles for research purpose.

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 Plus top 3% of Upwork talent | 250+ satisfied clients | 9+ years of experience Academic writer and editor: PhDs, master's theses, honour's theses, Q1 and Q2 papers Data analyst: R, Python, SPSS, STATA, PowerBI, Tableau | Survey & experimental data, Business reports, UX research, A/B testing, Econometrics, Biostatistics, Medical data, Text analysis, and much more. I always deliver excellent work, on time, and with the possibility of explanations and modifications. You can always reach me (within 6-8 hours at most), and I will make sure you are satisfied with my work every step of the way.

Power BI Specialist | Excel Automation | SQL & R/Python Analytics | Data Visualization Expert Transforming raw data into powerful insights with Power BI dashboards, DAX, and Power Query. I design intuitive, interactive reports that drive smarter decisions and business growth. Beyond Power BI, I bring advanced skills in Excel automation (VBA & formulas), SQL database design (MySQL, Access), and statistical analysis (R, Python, SPSS, Minitab, ggplot)—ensuring end-to-end data solutions from storage to visualization. Passionate about crafting data-driven stories, I help organizations uncover trends, solve challenges, and act with confidence. I can do your work more accurately and effectively, because I am a graduate in BA. Statistics in Sabaragamuwa university of Sri Lanka. Introduction to statistics • Data Analysis & Visualization with Power BI (interactive dashboards, Power Query, DAX, automation) • Analysis using EXCEL, SPSS, Eviews, MINITAB, Power Bi, R Programing, Python & R Studio, Access, MySQL • Descriptive statistics (mean, median, mode, variance, standard deviation) • Graphs including (Bar chart, Pie chart, Histogram, Scatter diagram) Also I do Analytics/ Dynamic / interactive dashboard Excel, R , Python and Power Bi Programming using python and R - Regression( linear \ logistics, ponominal), Machine learning, Deep learning, Supervise learning & unsupervised learning like as Decision tree, random forest, clustering, classification, svm and Time series analysis. • Hypothesis testing • T-test (one & two sample t-test) • Chi-square test, Goodness of fit test of independent • Confidence interval estimation • Probability, correlation and regression analysis • Unit Root test • Stationery Test • Design of experiments (ANOVA & factorial design) • Non parametric test • Excel and power bi Dashboard • Apply formulas/Advance Filter • Spreadsheet Excel data entry and formatting • Conditioning Formatting • Removing duplicates in MS Excel • All other statistics mathematics & data analysis So why are you waiting for? Feel free to contact me in anytime.... Thank you....

I help colleges, nonprofits, and data-heavy teams turn messy data into clear dashboards and research-backed insights. If you need someone who can build the data pipeline, run the analysis, and explain the results in plain language, I can help. I’m Ryan Tennis, an Institutional Research Analyst with over five years of experience in institutional research, data analytics, and reporting. At the University of Tennessee, I support strategic analysis through dashboard development, retention and graduation reporting, and improvements to data governance. I work with tools like Power BI, SQL, and R to build systems that help academic units and leadership teams make informed decisions. Previously, I led research efforts at Modesto Junior College and the University of the Pacific. My work there included: -Building predictive models to understand retention and completion -Automating reporting workflows so teams were not stuck in manual spreadsheets -Converting static reports into interactive dashboards for leadership and program review These projects helped teams monitor student outcomes, improve internal processes, and align their work with broader institutional goals. I have also trained staff on tools like Power BI, Tableau, Excel, and SQL so departments can maintain their own reports and dashboards. My focus is on solutions that are sustainable and practical, not one-off files that only I can fix. I’m currently pursuing a PhD in Evaluation, Statistics, and Methodology at the University of Tennessee. My research interests line up with the work I do every day, especially around program evaluation, applied statistical methods, and turning complex findings into straightforward recommendations. Outside of my full-time role, I run DataScienceHive.com, where I share examples of my work and offer consulting and training for organizations that want to make better use of their data. On Upwork, I can help with: -Cleaning and structuring data from spreadsheets or databases -Building or improving dashboards in Power BI, Tableau, or Google Sheets -Predictive modeling and outcome analysis in R or Python -Survey and assessment design, scoring, and analysis -Writing clear summaries and reports for non-technical stakeholders I can provide references from directors of institutional research who can speak to the quality and reliability of my work.