Supported by the following organizations
This is to certify that Sarah Welzel successfully completed and received a passing grade in CS109x: Introduction to Data Science with Python a course of study offered by HarvardX, an online learning initiative of Harvard University.
Noted by
Pavlos Protopapas
Scientific Program Director Harvard
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- Verified Certificate Issued December 12, 2025
- Valid Certificate ID a9ecee0d90ef4d6ca83d9c17374468bc