Question

2) If the mean of the following data is 14.7,
find the values of p and q.
Class 0-6 6-12 12 - 18 18 - 24 24 - 30 30 - 36 36-42 Total
Frequency 10 p 4 7
4 1 1 40​

Answer 1

Answer:

Hello Bro

Step-by-step explanation:

Here's your answer

1. find Xi

The Xi s will be :

3,9,15,21,27,33,39

Now Find ui [ui = xi - a /h] with a = 21

The Ui s will be ;

-3,-2,-1,0,1,2,3

Now Find fiui

The fiuis will be ;

-30,-2p,-4,0,4,22,120

Now

$14.7 = a + \frac{sum \: fiui}{sumfi} \times \\ class \: height$

Substitute the values and solve the equation hence, get the answer