Question

Above is a histogram displaying the times taken to scan 10 items at a checkout. It took 16 people between 25 and 35 seconds to scan the items, what is the frequency density for this group?

Answer 1

`Density = 1.6`

Explanation:

The histogram is not attached; however, the given details is enough to solve the question.

Given

`F = 16` --- Frequency

`Interval = 25\ to\ 35`

Required

Determine the frequency density

First, we calculate the class width

`Width = 35 - 25`

`Width = 10`

The frequency density is:

`Density = (F)/(Width)`

`Density = (16)/(10)`

`Density = 1.6`