8. The following data are the number of books read by 25 English 1 students per semester. Use single value grouping to construct a relative frequency histogram. 1 , 1, 2 , 1 , 3, 1 , 2, 6,2,2,3,3,3,3,3,5,3, 3 , 3, 2, 4, 4, 3, 5,7 9. A study was designed at a Somerset County hospital to identify the prevalence of depressive and anxious symptomatology among cancer patients and to identify key risk factors using validated assessment tools. Study explored the pattern of use of antidepressants among the study participants over a period of treatment. The following data gives score results for the group that used the antidepressants. Use limit grouping with a first class of 12 - 17 and a class width of 6 to construct a relative frequency histogram. 30 41 28 14 40 36 38 24 61 37 24 45 38 43 32 28 37 33 20 23 34 47 26 32 39 14 43 40 29 21 40 10. Construct a stem-and-leaf plot using one line per stem and two lines per stem for the following data set: 28 13 26 12 20 14 21 16 17 22 17 25 13 30 13 22 15 21 18 18 16 21 18 31 15 19 25 31 43 32 44 45 11. The following stem-and-leaf plot shows the ages of all students in a Statistic I class. Legend 117 = 17 7 7 8 8 8 8 2 0 0 2 2 2 4 5 6 6 3 0 012 2 2 3 3 5 4 1 1 1 4 4 4 6 5 2 3 4 6 2 How many people were there in the room