Suppose that you want to compare the average cost of a gallon of milk to the average cost of a gallon of gasoline in the U.S. over 20 years. Which type of display would be the best choice?
A. a double line graph
B. a double bar graph
C. a stem-and-leaf plot
D. a frequency table
B. a double bar graph
A. a double line graph.
A double line graph would be the best choice to compare the average cost of a gallon of milk to the average cost of a gallon of gasoline over 20 years. This type of display allows for the comparison of two different variables (milk and gasoline) across the same time period. It provides a visual representation of how the average cost of each item changes over time and allows for easy comparison between the two.
To compare the average cost of a gallon of milk to the average cost of a gallon of gasoline in the U.S. over 20 years, the best choice would be A. a double line graph.
A double line graph is a suitable choice for this scenario because it allows for the comparison of two different variables (in this case, the average cost of milk and gasoline) over a specific time period. The x-axis can represent the years, while the y-axis can represent the cost. This type of graph will enable you to easily observe the trends and changes in both milk and gasoline costs over the 20-year period.