13. An organizational psychologist asks 20 employees in a company to rate their job satisfaction on a 5- point scale from 1 = very unsatisfied to 5 = very satisfied. The ratings are as follows: 3, 2, 3, 4, 1, 3, 3, 4, 5, 2, 3, 5, 2, 3, 3, 4, 1, 3, 2, 4 Make (a) a frequency table and (b) a histogram. Then (c) describe the general shape of the distribution.