# Question

Delta is one of the largest airlines in the world and also has one of the oldest fleets of planes. The following data represent the age, in years, of a sample of eight planes from Delta’s fleet.

17 22 8 19 20 21 7 14

a. Calculate the range for this sample.

b. Calculate the variance for this sample.

c. Calculate the standard deviation for this sample.

17 22 8 19 20 21 7 14

a. Calculate the range for this sample.

b. Calculate the variance for this sample.

c. Calculate the standard deviation for this sample.

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