Answer to Question #70082 in Statistics and Probability for Emil

Question

Joseph conducted a survey of 391 young adults, age 18 through 34 years. Using the data from the table below, determine which of the following statements best describes the age distribution of the sample. You will need to calculate the mean, median, and mode of the distribution, as well as plot the data by hand.
Age Frequency (f) Cf fY Percentage C%
18 12 12 216 6.32 6.32
19 17 29 323 8.95 15.26
20 18 47 360 9.47 24.74
21 20 67 420 10.53 35.26
22 19 86 418 10.00 45.26
23 32 118 736 16.84 62.11
24 33 151 792 17.37 79.47
25 39 190 975 20.53 100.00
Total 190 700 4240 100.00


a.The distribution is bimodal.

b.The distribution is negatively skewed.

c.The distribution is symmetrical.

d.The distribution is positively skewed.