9 Find the mean age in years form a frequency distribution given below: Age(in yrs) 15-19 20-24 25-29 30-34 - Maths - Statistics

Question

9 Find the mean age in years form a frequency distribution given
below:
Age(in yrs) 15-19 20-24 25-29 30-34 35-39 40-45 45-49
Frequency 3 12 21 15 5 4 2

Ajanta Trivedi · Accepted Answer

given data is as follows:

Class interval	mid-point of CI(x)	frequency f	fx
15-19	17	3	51
20-24	22	12	264
25-29	27	21	567
30-34	32	15	480
35-39	37	5	185
40-45	42	4	168
45-49	47	2	94
		$Σ f =$ 62	$Σ f x =$ 1809

mean of the given data is

$\frac{Σ f x}{Σ f} = \frac{1809}{62} = 29.177$ $\approx 29.18$

hope this helps you.

cheers!!

9. Find the mean age in years form a frequency distribution given below: Age(in yrs) 15-19 20-24 25-29 30-34 35-39 40-45 45-49 Frequency 3 12 21 15 5 4 2

9. Find the mean age in years form a frequency distribution given below:

Age(in yrs) 15-19 20-24 25-29 30-34 35-39 40-45 45-49

Frequency 3 12 21 15 5 4 2