Question

Ou are a manager at Jimmy John's and have timed how fast your employees make a sandwich. Their times in seconds are below. Create a histogramto represent the data. 21,22.4,23,24.8,25.3,27,27.6,28.8,29.4,29.9,30.1,30.1,30.4,31.2,32,32.9

Answer 1

See attachment for histogram

Explanation:

Given

`Data: 21,22.4,23,24.8,25.3,27,27.6,28.8,29.4,29.9,30.1,30.1,30.4,31.2,32,32.9`

Required

Represent on histogram

Calculate the range of the data

`Range = 32.9 - 21`

`Range = 11.9`

Using a width of 5, we have:

`Class = (Range)/(5)`

`Class = (11.9)/(5)`

`Class =2.38`

Round up

`Class = 3`

This means that the class will have 3 classes which are:

21.0 - 24.9, 25.0 - 29.9 and 30.0 - 34.9

The frequency table is as follows:

`\begin{array}{cc}{Interval} & {Frequency}&{21.0 - 24.9} & {4} & {25.0 - 29.9} & {6} & {30.0 - 34.9} & {6} \ \end{array}`

See attachment for histogram