Course certificate for "Data Science Math Skills", an online course by Duke University offered on Coursera, completed on 8 November 2023. The course covers the core math behind data science: set theory, summation notation, functions and graphs, exponents and logarithms, and the basics of probability, including Bayes' theorem. Signed by Daniel Egger (Pratt School of Engineering) and Paul Bendich (Duke Mathematics). Coursera verified my identity and participation. Verify at: https://coursera.org/verify/TJMBBW93MHPK