Stephanie Mendoza
About
Detail
Product Analyst | Data Scientist
Chicago, Illinois, United States
Résumé
Jobs
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Senior Product AnalystPASSWORDAug 2023 - Current (3 years 3 months)- Product AnalystGopuffJan 2022 - Mar 2023 (1 year 3 months)Consumer facing product analytics focusing on customer growth and retention, customer lifecycle, loyalty programs, referrals, and customer relationship management.
• Built the analytics roadmap and managed project prioritization in multiple product areas.
• Established measurement frameworks and developed dashboards on various BI platforms to monitor business performance and uncover trends.
• Spearheaded root cause and deep dive analyses to troubleshoot various issues and bugs.
• Managed A/B testing and created experimentation roadmaps from end-to-end, relating to price and offer testing, feature testing, and user experience testing.
• Used advanced statistical methods like hypothesis testing, forecasting, regressio - StatisticianWestatJun 2020 - Dec 2021 (1 year 7 months)• Provided statistical support for large-scale nationally representative surveys related to health and education
• Performed statistical analysis of complex survey data
• Extracted insights from data using R, SAS, SQL
• Used advanced statistical methods
• Built dashboards and reports that ensured quality control of data products and monitored recruitment performance
• Designed and implemented methodological experiments
• Wrote user guides, technical papers, and documentations that provided descriptions of complex statistical methods and guided technical uses of data products
• Created public use files by conducting statistical disclosure analysis
• Developed and tested a custom SAS macro - Survey Sampling Statistical InternWestat Improving Lives Through ResearchJul 2018 - Jun 2020 (2 years)
- Data Analyst InternLibrary Of CongressJun 2017 - Aug 2017 (3 months)• Provided statistical and data analytics expertise to the Information Management and Technology group
• Collaborated with cross-discipline teams in creating a Congressional Research Services data metrics webpage
• Updated various SAS programs to ensure reproducibility and efficiency
• Constructed and maintained weekly reports on usage of CRS.gov that led to enhancements of user experience
• Extracted data from a relational database using SQL and provided statistics and visualizations in Excel and SAS - TutorCalifornia Polytechnic State UniversitySan Luis ObispoSep 2016 - Mar 2018 (1 year 7 months)• Tutor of mathematics and statistics for the University Athletics Department
• One-on-one tutoring sessions as well as small group instruction for student-athletes
• Specialized in algebra, calculus, advanced mathematics, advanced statistics - Statistics Department Research AssistantCalifornia Polytechnic State UniversitySan Luis ObispoJun 2016 - Jul 2018 (2 years 2 months)• Work funded by a grant from the National Science Foundation
• Began work on this project as an undergraduate research assistant, continued as a senior project, and subsequently as a post-graduate research assistant
• Examined nationwide student survey data from introductory statistics courses to analyze conceptual gains and changes in attitudes towards statistics
• Automated cleaning of large datasets and designed advanced statistical models (e.g. clustering, hierarchical linear models) in R
• Co-authored two research papers and presented findings at International Conference on Teaching Statistics 2018 in Kyoto, Japan - Teaching AssistantCalifornia Polytechnic State UniversitySan Luis ObispoJan 2016 - Dec 2017 (2 years)• TA for introductory and upper-level statistics courses
• Duties included consulting with professors and students, assisting with in-class technology activities, assisting with student questions, and leading specific lessons - GraderCalifornia Polytechnic State UniversitySan Luis ObispoSep 2015 - Jun 2017 (1 year 10 months)• Duties included creating rubrics, consulting with professors, and grading students reports and projects for introductory and advanced statistics courses
- KTutorKumon Math and ReadingAug 2013 - Sep 2014 (1 year 2 months)• Tutor for grades 3-12 in mathematics
• Specialized in pre-calculus, calculus 1, calculus 2
• Duties included tutoring students in multiple subjects, grading student work, creating worksheets to guide student learning, planning future lessons, and communicating with parents on student progress
Education
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- Master's degree, Survey and Data ScienceUniversity of Maryland
- Bachelor's degree, StatisticsCalifornia Polytechnic State UniversitySan Luis Obispo
Projects (professional or personal)
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- AAnalyzing Chicago Crime Using Machine Learning MethodsSep 2018 - Dec 2018 (4 months)Crime in Chicago, IL has often been analyzed with the intention of reducing crime or understanding underlying characteristics of the area. This project aimed at using machine learning methods to explore police records in Chicago during holiday weekends in order to not only understand existing trends, but to create a predictive model that police departments could use to prepare for spikes in different types of crimes in their patrol areas.
- EExploratory Analysis of the Factors Related to Gun MortalityJan 2017 - Apr 2017 (4 months)I worked on a team of Cal Poly students to complete a project for the SAS Global Forum Student Symposium. Our team became a finalist for the data analytics competition, and was awarded a trip to the SAS Global Forum Student Symposium. At the conference, we presented our project and were awarded second place in the competition.
- SStatistical Pedagogy Research ProjectJun 2016 - Jul 2018 (2 years 2 months)I have been involved in this research project since 2016, starting as an undergraduate research assistant, and continuing with a senior project report. Now that I have graduated, I am being paid through a National Science Foundation grant to advance this research even further. The project involves working with large data sets in R, and uses cutting edge statistical analysis like hierarchical linear modeling. I presented my findings on this research at the International Conference on Teaching Statistics 2018 in Kyoto, Japan.
Awards
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- CAcademic Excellence and Outstanding CitizenshipCalifornia Polytechnic State University San Luis Obispo College of Science and MathematicsJun 2018This award honors students in the College of Science and Mathematics who not only excelled academically in their courses, but also contributed to the department as a whole by volunteering time and being involved in various department activities.
- Mu Sigma Rho National Statistics Honorary Society MemberStatistics DepartmentMay 2016I was awarded membership to Mu Sigma Rho, a national statistics honorary society, for outstanding achievement in college statistics courses. With the award, I was also given a year long membership to the American Statistical Association.