21. Identify the relative frequency for 59 - 61 class. a. 0.22 b. 0.16 c. 0.10 d. 0.27 22. For the stem-and-leaf plot below, what is the maximum and what is the minimum entry Key: 11 | 2 = 112 11 0245 12 66677 7 78 889999 13 01123667889 14 34668999 15 011237789 16 05 a. max: 160; min: 115 b. max: 160; min: 112 c. max: 165; min: 114 d. max: 165; min: 110 Use the data to answer # 22 - 24. The numbers of cupcakes eaten in one week are listed below. 8 5 4 3 3 6 9 23. What is the population standard deviation? a. 1.4 b. 2.4 c. 2.2 d. 4.5 24. What is the variance using the population standard deviation you found in #22? a. 1.96 b. 5.76 C. 4.84 d. 20.25 25. What percent of data is between 3 and 8? a. 25% b. 50% c. 75% d. 100% Use the data to answer # 25 - 26. The dinners served at a restaurant are listed below. 289 135 322 299 26. What is the 1st quartile? a. 289 b. 212 c. 299 d. 233 27. What is the Interquartile Range (IQR)? a. 98.5 b. 100.5 c. 54.5 d. 87.517. The heights (in inches) of 20 adult males are listed below. Find the range of the data set. 70 72 71 70 69 73 69 68 70 71 67 71 70 74 69 68 71 71 71 72 a. 5 b. 6 C. 6.7 d. 7 18. The heights (in inches) of 10 adult males are listed below. Find the sample standard deviation. 70 72 71 70 69 73 69 68 70 71 a. 70 b. 3 c. 1.49 d. 2.38 Use the following frequency distribution for questions #18 -20. Height (in inches) Frequency 50-52 5 53-55 8 56 -58 12 59 - 61 13 62 - 64 11 19. Identify the class width used in the frequency distribution. a. 2 b. 3 C. 4 d. 5 20. Identify the midpoint of the first class. a. 50 b. 51 c. 51.5 d. 52