Use the frequency histogram to complete the following parts. (a) Determine the number of classes. (b) Estimate the greatest and least frequencies. (c) Determine the class width. (d) Describe any patterns with the data. Employee Salaries 32 37 42 47 52 57 62 0 100 200 300 Salary (in thousands of dollars) Frequency A histogram titled "Employee Salaries" has a horizontal axis labeled "Salary in thousands of dollars" from 32 to 62 in increments of 5 and a vertical axis labeled "Frequency" from 0 to 300 in increments of 50. The histogram contains vertical bars of width 5, where one vertical bar is centered over each of the horizontal axis tick marks. The approximate heights of the vertical bars are listed as follows, where the label is listed first and the approximate height is listed second: 32, 10; 37, 100; 42, 260; 47, 280; 52, 180; 57, 70; 62, 50. Question content area bottom Part 1 (a) There are 7 classes. (Type a whole number.) Part 2 (b) The least frequency is about 25. (Round to the nearest whole number as needed.)