Question

o w. ten komputer klad Odwołania Korespondencja Recenzja Widok PomocPowiedz mi, co chces 83 are 6 to 9 years old, 154 are 10 to 14, 18 are 15 to 21, and 170 are older than 21. E age distribution make: a) a frequency table; b) a relative frequency table, c) a bar chart using counts on the y- d) a relative frequency bar chart using percentages on the y-axis; e) a pie chart. 9. As part of the marketing team at an Internet music site, you want to understand wh customers are. You send out a survey to 25 customers (you use an incentive of $50 worth of downloads to guarantee a high response rate) asking for demographic inforn One of the variables is the customer's age. For the 25 customers the ages are: 20 30 38 25 35 32 30 22 22 42 34 14 44 32 44 29 29 48 35 44 30 11 26 32 48 a) Make a histogram of the data using a bar width of 10 years. b) Make a histogram of the data using a bar width of 5 years. c) Make a relative frequency histogram of the data using a bar width of 5 years. d) Is the distribution unimodal or multimodal? e) Where is (are) the mode(s)? f) Is the distribution symmetric? g) Are there any outliers? 10. As the new manager of a small convenience store, you want to understand the sh patterns of your customers. You randomly sample 20 purchases from yesterday's reco purchases in U.S. dollars): 39.05 37.91 56.95 21.57 75.16 2.73 34.35 81.58 40.83 74.3 39.92 64.48 38.24 47.54 47.51 51.96 11.72 32.98 65.62 a) Make a histogram of the data using a bar width of $20 b) Make a histogram of the data using a bar width of $10 c) Make a relative frequency histogram of the data using a bar width of $10 d) Is the distribution unimodal or multimodal? e) Where is (are) the mode(s)? f) Is the distribution symmetric? g) Are there any outliers?

Answer 1

9.
Bin Frequenc Histogram 30 0 25 0 More 15 Frequency 10 2 0 10 15 20 25 30 35 45 50 More 0 2

a) Unimodal at bin 30

b) Bimodal at bin 30 and 35

c) unimodal at bin 10

f) not symmetric

g) No outlier (Box plot is for the reference)