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  • To draw a histogram to represent the following frequency distribution : the adjusted frequency for the class 25-45 is :

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 classes 25–45 is:

\\(A) 6 \\ (B) 5\\ (C) 3 \\ (D) 2

Answers (1)

Answer : D

In the given data, we have to find the width to adjust the frequency.

We have, width = 10 - 5 = 5  

Width of 25-45 = 45 -25 = 20

So interval 25-45 includes 4 classes with class interval 5

\text {AF}=\frac{\text {given frequency}\times \text {lower limit}}{\text {Class width}}

=\frac{8 \times 5}{20}=\frac{8}{4}=2

Therefore option (D) is correct.

Posted by

infoexpert23

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