All right. Calculate the z-scores for each of the following exam grades, draw and label a sketch for each example. We could probably do it all on the same example, but the first thing we'd have to do is just remember what is a z-score? What is a z-score? Z-score is literally just measuring how many standard deviations away from the mean. Just like that. So we literally just have to calculate how many standard deviations each of these guys are from the mean, and that's their z-scores.