To draw a histogram to represent the following frequency distribution.
Class Interval `5−10 10−15 15−25 25−45 45−75 `
Frequency 6 12 10 8 15
The adjusted frequency for the class `25-45` is

Options

A. `6`
B. `5`
C. `3`
D. `2`

Answer

D

Explanation

Here, minimum class width `= 5`
Corresponding frequency in the interval `(25-45)=8`
and the width of the interval `25-45=20`
`therefore` Adjusted frequency `= ("Frequency")/("Class width of (25-45)") xx "Minimum class width"`
`=8/20 xx 5 = 8/4=2`
Hence, the adjusted frequency for the class `25-45` is `2.`