False negative Memes

Statistical concepts have never been so... reproductive ! This textbook example brilliantly demonstrates Type I and Type II errors using pregnancy diagnoses. A Type I error (false positive) shows a doctor telling a clearly male patient he's pregnant—rejecting a true null hypothesis when it's actually true. Meanwhile, the Type II error (false negative) shows a doctor telling a visibly pregnant woman she's not pregnant—failing to reject a false null hypothesis. Next time you're struggling with statistics homework, just remember: if your male friend gets a positive pregnancy test, you've got yourself a classic Type I error. The p-value is probably as confused as that poor man's face!