For the data set, find the range, the sample variance and the sample standard deviation.

8. Smiles per Mile A survey by Consumer Reports looked at the reliability of cars as the cars get older. They surveyed owners of cars that were 3 years old, and recorded the average yearly repair and maintenance costs (in dollars) for 15 different models of compact cars

125 45 115 40 125 55 25 25 90 110 115 120 45 105 110 80