Question

Consider the frequency distribution of 45 observations.

Class	0 - 10	10 - 20	20 - 30	30 - 40	40 - 50
Frequency	5	9	15	10	6

The upper limit of the median class is:

Options

• 20

• 10

• 30

• 40

Answer 1

30

Explanation:

Class	Frequency	c.f
0 - 10	5	5
10 - 20	9	14
20 - 30	15	29
30 - 40	10	39
40 - 50	6	45
	N = 45

N = 45,

`N/2 = 45/2` = 22.5

Since 22.5 lies in c.f. 29.

So, 20-30 in median class.

Thus, the upper limit of median class is 30.