using intervals of width 10, how many intervals are needed for this graph to be drawn correctly?\n5 or…

using intervals of width 10, how many intervals are needed for this graph to be drawn correctly?\n5 or fewer\nbetween 6 and 10\nbetween 11 and 19\n25 or more\ndone\nfast pax\nnumber of employees: 12\naverage salary: $39,500\nfast pax employee salaries\nnumber of employees\nsalary in thousands ($)

using intervals of width 10, how many intervals are needed for this graph to be drawn correctly?\n5 or fewer\nbetween 6 and 10\nbetween 11 and 19\n25 or more\ndone\nfast pax\nnumber of employees: 12\naverage salary: $39,500\nfast pax employee salaries\nnumber of employees\nsalary in thousands ($)

Answer

Explanation:

Step1: Determine the range

The lowest salary range shown is 0 - 19 (in thousands) and the highest is 200 - 299 (in thousands). The range is from 0 to 299. So the total range is 299 - 0=299.

Step2: Calculate number of intervals

We divide the total range by the interval width. The interval width is 10. So the number of intervals $n=\frac{299}{10}=29.9$. Since we can't have a fraction of an interval, we need to round up. So we need 30 intervals which is 25 or more.

Answer:

25 or more