According to the American Petroleum Institute, the state taxes (in cents) per gallon of gasoline for all 50 states are as follows:   State Taxes Per Gallon of Gasoline (Cents) Frequency 11 - 15 2 16 – 20 3 21 – 25 15 26 – 30 18 31 – 35 8 36 - 40 4   Find each of the following: Standard Deviation Coefficient of Variation

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