Question

cost per doctor visit
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 current graph

The current y - axis has a range from 0 to 40 with a large interval.

Step2: Consider effect of new scale

Changing the y - axis scale to 25 - 40 will zoom in on the data range of interest. This will make the differences between the heights of the bars (cost per doctor visit for each plan) more pronounced compared to a wider scale like 0 - 100 or larger intervals like counting by 20s or 5s. Smaller range and appropriate interval emphasize differences.

Answer:

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