For the sample data in Exercises 17–22, do the following:

  1. Calculate the sample variance.
  2. Compute the sample standard deviation.
  3. Interpret the sample standard deviation.

Question 3.132

19. A sample from the motor vehicle theft data in Exercise 13 is as follows.

Country Theft rate
Italy 208.0
USA 167.8
Greece 100.2

3.2.19

(a) 2967.7733 motor vehicles stolen per 100,000 people squared (b) 54.48 motor vehicles stolen per 100,000 people (c) For this sample of motor vehicle theft data, the typical difference between a country's motor vehicle theft rate and the mean motor vehicle theft rate is 54.48 motor vehicles stolen per 100,000 people.