What is the age distribution of adult shoplifters (21 years of age or older) in
ID: 3264889 • Letter: W
Question
What is the age distribution of adult shoplifters (21 years of age or older) in supermarkets? The following is based on information taken from the National Retail Federation. A random sample of 895 incidents of shoplifting gave the following age distribution. Estimate the mean age, sample variance, and sample standard deviation for the shoplifters. For the class 41 and over, use 45.5 as the class midpoint. (Round your answers to one decimal place.)
Age range (years) 21-30 31-40 41 and over Number of shoplifters 252 365 278Explanation / Answer
The statistical software output for this problem is:
Approximate summary statistics:
Using counts in No. of Shoplifters
Hence,
x = 35.8
s2 = 59.2
s = 7.7
Column Mean Variance Std. dev. Age 35.790503 59.19963 7.6941296Related Questions
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