I have a confession to make. I used to run random A/B tests simply for the sake of running another test. I’d read articles like 50 A/B Split Testing Ideas, jot down my favorite ones, and then come ...

calculations: calculating sum of squares for x, y, and xy from raw data; calculating slope & intercept from sum of squares values; writing out the regression equation and finding predicted values for ...

At times we wish to examine statistical evidence, and determine whether it supports or contradicts a claim that has been made (or that we might wish to make) concerning the entire population. This is ...

At times we wish to examine statistical evidence, and determine whether it supports or contradicts a claim that has been made (or that we might wish to make) concerning the entire population. This is ...