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 3.130

17. A sample of the state export data from Exercise 11 is provided in the table.

State Exports
Connecticut 1.4
Massachusetts 2.4
Rhode Island 0.2

3.2.17

(a) 1.2133 billion dollars squared (b) $1.10 billion (c) For this sample of state export data, the typical difference between a state's export amount and the mean export amount is $1.10 billion.