1. Find the class boundaries, midpoints, and widths for each class. a. 51-63 2. The following is an incorrectly constructed frequency distribution. Circle the reason(s) why they are wrong. Class Frequency 26-30 30-35 35-40 40-44 44-49 a Class width is not uniform . Class limits overlap b. A class has been omitted. d. All of the above 3. The following is an incorrectly constructed frequency distribution. Circle the reason(s) why they are wrong Class Frequency 5-9 9-13 13-17 17-20 20-24 Class width is not uniform c. Class limits overlap A class has been omitted. 1. All of the above MATH 2113 - Analysis of Data and Chance TH 2113 - Analysis of Data and Chance 8. In Pennsylvania the numbers of teacher strikes for the last 14 years are 5. The average number of pupils per teacher in certain states is shown. shown. Construct a dotplot for the data. Comment on the graph. 28 24 23 20 16 13 9 13 18 18 17 12 21 19 13 12 18 19 15 21 22 9 15 14 14 12 26 17 19 16 26 17 13 10 13 19 7 17 21 12 15 13 12 15 17 12 16 16 20 16 17 17 12 16 14 a. What is the class width for a frequency distribution with 7 classes? b. Construct a frequency distribution for the data using the class width you found in part (a). 9. The math and reading achievement scores from the National Assessment of Educational Progress for selected states are listed below. Construct a back-to- back stem and leaf plot with the data, and compare the distributions. Math Reading 52 69 57 62 58 55 65 76 76 66 67 70 66 55 59 75 70 63 69 79 76 77 68 76 73 77 74 Construct a histogram using the frequency distribution from part (b). 80 d. Comment on the shape of the distribution