Percent of men 30 4. A manufacturing company is reviewing the salaries of its full-time employees below the executive level at a large plant. The following histograms display the distribution of salary for male and female employees. Men 35 Women 40 50 60 70 Salary ($1000) Percent of women 10 30 25 30 40 50 60 70 Salary ($1000) a) There are 756 female employees and 2451 male employees at the plant. Why did we use percents rather than counts on the vertical axis of these graphs?