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Ann Mark

Data Analyst


My Portfolio Highlights

My New Course

Introduction to Python

Data maestro, conducting the symphony of insights with analytical expertise.

My Work

Take a look at my latest work.


Intermediate SQL Queries


Survival Analysis in R


Introduction to Python

DataCamp Course Completion

Take a look at all the courses I’ve completed on DataCamp.

My Work Experience

Where I've interned and worked during my career.

The George Washington University- Milken Institute School of Public


Health | Jun 2021 - May 2023

Research Associate, Data Analysis

•Develop & maintain SAS scripts for statistical analyses. •Utilize Airtable for data and task management / record keeping •Data management and organization, including monthly data quality checks, exports to collaborators and data freezes for internal use. •Develop custom dashboards and reports for respective lab research projects. •Data management training of the team, as well as review of DUAs and DMPs. •Analytic training and analysis requests for work study students. •Create high-level dashboards for the research Center. •Developing Excel macros for lab research team use. •Prepare and deliver presentations of the analysis on research study data to both internal team and external collaborators. •Compare metadata from our analyses with those of our external collaborating counterparts, ahead of data transfers. •Contribute to the analysis for peer-reviewed manuscripts. •Work closely with teams across the organization to ensure data accuracy and integrity. •Perform any other ad-hoc analysis are requested.
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Walmart | May 2019 - May 2021


• Daily review of customer sentiment for Online Grocery Shopping • Conduct Statistical Analysis and compile data • Use JIRA for workflow management • Perform online inventory validations, blocking, restricting and approval • Create graphs / visualizations in Excel or Tableau • Audit and create weekly Store Compliance / Inspection Reports • Compilation of weekly Financial Year (FYE) Customer Feedback data reports • Quarterly KPI review of Online Grocery Items • Nutritional Food Panel auditing

broadstreet + covid-19 data project | Jun 2020 - Jul 2020

Data Quality Assuarance Intern


Challenge Success | Apr 2018 - Jun 2018

Data Technician

●Preview surveys in Qualtrics ●Data mapping ●Data Visualization; dashboards for the data in MS Excel (Macros/SQL), and Qualtrics ●Analyzed data in MS Excel; gave feedback / summary reports

I&M Bank Ltd | Mar 2015 - Nov 2015

Banc Assurance Officer

Placement of new Insurance covers for clients. Renewal of Insurance covers as well as follow-up of insurance claims on behalf of clients.


Unit Sales Manager

Sourced for Direct Sales insurance agents. Recruiting and Training insurance agents. Sales & Marketing of the General (Non-Life)Insurance products.

National Bank of Kenya | Jun 2013 - Aug 2013


Stress Testing(Liquidity, Credit, Market and Foreign Exchange Risk) Financial Report overview Bonds evaluation Evaluate Risk Exposure & Information Securities Plan Audit programs & procedures

My Education

Take a look at my formal education

California State University - East Bay
University of Eldoret

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