Refer to Exercise 91. a. How do the ranges of the two distributions compare? Justify your answer.

Question:

Refer to Exercise 91.

a. How do the ranges of the two distributions compare? Justify your answer.

b. Explain why the standard deviation of the total family incomes in the New Jersey sample is so much larger than for the Indiana sample.

Exercise 91.

The parallel dotplots show the total family income of randomly chosen individuals from Indiana (38 individuals) and New Jersey (44 individuals). Means and standard deviations are given below the dotplots.

Indiana New Jersey 25,000 50,000 75,000 100,000 125,000 150,000 175,000 Total family income ($) Standard Mean deviation Indiana $47,400 $29,400 New Jersey $58,100 $41,900