Here is some Stata code I wrote back in 2017. A colleague asked how to perform a Kolmogorov-Smirnov test in Stata when there are more than two groups. I was surprised to find that such a test is not implemented in Stata, nor widely implemented in general. I thought perhaps that this was because such a test did not exist. On the contrary, a k-sample analogue to the Kolmogorov-Smirnov test was developed back in 1959 by Jack Kiefer, a mathematical statistician at Cornell.

I gave this presentation on December 6, 2021 as part of the course SURV727 “Fundamentals of Cmputing and Data Display.” I use R for data collection, and then clean and analyze the data in Stata. My data science experience grew quickly and greatly during this course, and I had a lot of fun combing various sources of data involving API’s from Spotify, Last.FM, Wikipedia, and Google, and using web scraping techniques to obtain review scores from Wikipedia.