Question

how might the graph be redrawn to emphasize the difference between the cost per doctor visit for each of the three plans?
the scale on the y - axis could be changed to 0 - 100.
the scale on the y - axis could be changed to 25 - 40.
the interval of the y - axis could be changed to count by 5s.
the interval of the y - axis could be changed to count by 20s.

Explanation:

Step1: Analyze the effect of changing the y - axis scale

If the scale on the y - axis is changed to a smaller range (e.g., 25 - 40), the differences between the bars (which represent the cost per doctor visit for each plan) will appear more exaggerated.

Step2: Analyze other options

• Changing the y - axis scale to 0 - 100 (a larger range) will make the differences between the bars look smaller.
• Changing the interval to count by 5s or 20s does not directly emphasize the difference as effectively as changing the scale range when the data values are in a relatively narrow range (as they seem to be in the original graph, likely around 30 - 40).

Answer:

The scale on the y - axis could be changed to 25 - 40.