Question

gemma is creating a histogram based on the table below.

salary range	number of people
$20,000 - $39,999	30
$40,000 - $59,999	35

which scale can she use for the vertical axis such that the difference in the heights of the bars is maximized?
0–50
0–40
10–50
25–40

Explanation:

Step1: Analyze data range

The number of people values are 40, 30, 35. The highest value is 40.

Step2: Evaluate each option

• Option A (0 - 50): Covers all values with enough range to show differences clearly.
• Option B (0 - 40): The highest value is 40, and using this range will make the bars for 30 and 35 hard - to - distinguish in height differences.
• Option C (10 - 50): Starting from 10 will cut off the lower part of the data, not showing the full picture and reducing height differences.
• Option D (25 - 40): This range is too narrow and will compress the data, minimizing height differences. So 0 - 50 maximizes height differences.

Answer:

A. 0–50