# Question

Using the data set from the previous problem concerning the ages and maintenance costs of five similar printing presses:

a. Calculate the average maintenance cost of the presses.

b. Calculate the standard deviation of the maintenance costs of the presses.

c. Calculate the range of the maintenance costs of the presses.

d. Calculate the coefficient of variation of the maintenance costs of the presses.

a. Calculate the average maintenance cost of the presses.

b. Calculate the standard deviation of the maintenance costs of the presses.

c. Calculate the range of the maintenance costs of the presses.

d. Calculate the coefficient of variation of the maintenance costs of the presses.

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