This is when you might need to use a non-parametric test to answer your statistical question. Non-parametric refers to a type ...

One of the thorniest issues with this question is statistical significance. It’s one of the most influential metrics to determine whether a result is published in a scientific journal.

The new question would be included at the Justice Department ... The bureau already fills in missing data about people in the census using a statistical technique called “imputation,” relying on ...