The National Sporting Goods Association (NSGA) conducted a survey of the ages of individuals that purchased skateboarding
Question:
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 relative frequency distribution.
Age of User ........Percent
Under 14 years old .....35
14 to 17 years old .....41
18 to 24 years old .....15
25 to 34 years old ..... 4
35 to 44 years old ..... 4
45 to 64 years old ..... 1
Suppose the survey was based on a sample of 200 individuals. 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.
Fantastic news! We've Found the answer you've been seeking!
Step by Step Answer:
Related Book For
Essentials Of Business Statistics Communicating With Numbers
ISBN: 9780078020544
1st Edition
Authors: Sanjiv Jaggia, Alison Kelly
Question Posted: