Mathematics, 21.06.2021 16:30 rachelsweeney10
The National Sporting Goods Association (NSGA) conducted a survey of the ages of individuals that purchased skateboarding footwear. The ages of this survey are summarized in the following percent frequency distribution. Assume the survey was based on a sample of 200 individuals.
Age of User Percent
Under 14 years old 34
14 to 17 years old 39
18 to 24 years old 17
25 to 34 years old 4
35 to 44 years old 3
45 to 64 years old 3
Required:
Calculate the mean and the standard deviation of the age of individuals that purchased skateboarding shoes. Use 10 as the midpoint of the first class.
Answers: 3
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The National Sporting Goods Association (NSGA) conducted a survey of the ages of individuals that pu...
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