Assignment:
The price in dollars of a gallon of gasoline at the end of each month is recorded for one year. The results are:
1.19 1.28 1.55 1.76
1.85 1.85 1.83 1.76
1.66 1.52 1.48 1.47
Find the mid-range of these prices.
Provide complete and step by step solution for the question and show calculations and use formulas.