Phil Factor Statistics in SQL: The Mann–Whitney U test Imagine you have some data. Maybe you’ve done a web redesign and you want to do some A/B testing to see if by redesigning the... 30 June 2017 6 min read
Blogs Phil Factor in Blogs Statistics in SQL: The Kruskal–Wallis Test Before you report your conclusions about your data, have you checked whether your 'actionable' figures occurred by chance? The Kruskal-Wallis test is a safe way... 01 June 2017 4 min read
Blogs Phil Factor in Blogs Statistics in SQL: Simple Linear Regressions Although linear regressions can get complicated, most jobs involving the plotting of a trendline are easy. Simple Linear Regression is handy for the SQL Programmer... 13 April 2017 4 min read
Blogs Phil Factor in Blogs Statistics in SQL: Kendall’s Tau Rank Correlation Statistical calculations in SQL are often perfectly easy to do. SQL was designed to be a natural fit for calculating correlation, regression and variance on... 10 April 2017 6 min read
Blogs Phil Factor in Blogs Statistics in SQL: Pearson’s Correlation Some people will assure you that you can't do any serious statistical calculations in SQL. In the first of a series of articles, Phil factor... 06 April 2017 3 min read
