2) In a two week long study about productivity in a factory, the following data were obtained on the total number of acceptable pieces that 40 workers under consideration produced: 65 36 49 84 43 78 37 40 MON 50 60 56 59 48 76 74 88 35 62 52 63 76 60 48 55 21 35 61 45 45 53 34 67 65 55 61 41 74 82 58 62 a) Construct a frequency distribution using 6 classes. b) Draw a frequency histogram. c) Draw a relative frequency histogram. d) Draw the percentage ogive.