Question

using intervals of width 10, how many intervals are needed for this graph to be drawn correctly?
5 or fewer
between 6 and 10
between 11 and 19
25 or more
done
fast pax
number of employees: 12
average salary: $39,500
fast pax employee salaries

Explanation:

Step1: Determine the range

The salary ranges shown in the graph go from 0 - 299 (in thousands). So the total range is 299 - 0=299.

Step2: Calculate number of intervals

Divide the total range by the interval - width. $\frac{299}{10}=29.9$. Since we can't have a fraction of an interval, we need to round up to the next whole number. So we need 30 intervals.

Answer:

25 or more