The National Sporting Goods Association (NSGA) conducted a survey of the ages of individuals that purchased skateboardin

[answerhappygod]

The National Sporting Goods Association Nsga Conducted A Survey Of The Ages Of Individuals That Purchased Skateboardin 1 (47.22 KiB) Viewed 131 times

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 Under 14 years old 14 to 17 years old 18 to 24 years old 25 to 34 years old 35 to 44 years old 45 to 64 years old Percent Frequency 38 35 15 3 5 4 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. (Do not round intermediate calculations. Round your answers to 2 decimal places.) Mean Variance Standard deviation