Question

If the sum of all the frequencies is 24, then the value of z is:

Variable (x)	1	2	3	4	5
Frequency	z	5	6	1	2

Options

• 4

• 6

• 8

• 10

Answer 1

10

Explanation:-

Here, n = ∑fi = z + 5 + 6 + 1 + 2 = 14 + z

Given: ∑fi = 24

∴ n = ∑fi = 14 + z = 24

⇒ z = 24 - 14 = 10