Question

OutdoorGearLab is an organization that tests outdoor gear used for climbing, camping, mountaineering, and backpacking. Suppose that the following data show the ratings of hard shell jackets based on the breathability, durability, versatility, features, mobility, and weight of each jacket. The ratings range from 0 (lowest) to 100 (highest).

42 66 67 71 78 62 61 76 71 67

61 64 61 54 83 63 68 69 81 53

a. Make a stem-and-leaf display.

b. Obtain the sample mean and median.

c. Find the sample 90th percentile.

d. Calculate the interquartile range and interpret this value.

e. Summarize the data in a frequency table and draw either a line diagram or a histogram.

f. Make a boxplot of the ratings.

g. Comment on the location and shape of the distribution.