An investigation by The Associated Press and Cox Media Group Television Stations found that over the past 10 years, hundreds of school crossing guards — many of them of retirement age or older — have ...

For our 2025 Component Abuse Challenge there have been a set of entries which merely use a component for a purpose it wasn’t quite intended, and another which push misuse of a part into ...

How ANOVA helps ensure process data lead to accurate, defensible decisions. The two-sample t-test determines if two population means are equal. Typical applications involve testing whether a new ...