Some individuals would like to have a negative z-score for their weight, or for the amount of money they paid for their new car. Students would also like to have a negative z-score for the number of hours of study needed in order to get an A on a final exam in a particular course. Students would love to have a negative z-score for the amount of their student debit.
Work Step by Step
In all these cases, a negative z-score means that they are below the mean. In each of these cases, below the mean is generally good.