Supported by the following organizations
This is to certify that Yeji Lori Song successfully completed and received a passing grade in PH125.2x: Data Science: Visualization a course of study offered by HarvardX, an online learning initiative of Harvard University.
Noted by
Rafael Irizarry
Professor of Biostatistics Harvard T.H. Chan School of Public Health
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- Verified Certificate Issued December 6, 2025
- Valid Certificate ID 0c04f822937242019da55ee5bc1d4b75