Ms Anderson gave her students a biology test last week Here are the test scores for each of the eighteen students Test scores 70 82 69 70 67 86 70 87 83 87 71 83 85 80 68 74 81 80 a Complete the grouped frequency distribution for the data Note that the class width is 6 Test scores 66 to 71 72 to 77 78 to 83 84 to 89 X Frequency 0 0 G b Construct a histogram for the data Frequency 8 7 6 5 4 3 2 1 0 66 to 71 78 to 83 Test scores 72 to 77 84 to 89