empt job vacancies. The histogram shows that most nonexempt jobs took from 17 to 21 days to fill, and the amount of time to fill nonexempt jobs ranged from 1 to 33 days. an HR manager relied simply on data from personnel files on the number of days it took to fill nonexempt positions, it would be extremely difficult to understand the variation and average tendency in the amount of time to fill the positions. Scattergrams show the relationship between two variables, events, or different pieces of data. Scattergrams help employees determine whether the relationship be- tween two variables or events is positive, negative, or zero.