Question

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:

विकल्प

• 6

• 5

• 3

• 2

Answer 1

2

Explanation:

Here, minimum class width = 5

Corresponding frequency of the class interval 25 – 45 = 8

And the width of the interval 25 – 45 = 20

∴ Adjusted frequency = ${\displaystyle \frac{\text{Frequency}}{\text{Class width of} (25-45)}\times }$ Minimum class width

= ${\displaystyle \frac{8}{20}\times 5}$

= ${\displaystyle \frac{8}{4}}$

= 2

Hence, the adjusted frequency for the class 25 – 45 is 2.