Question

if the mean of the following data is 20.2 find the value of p : x =10,15,20,25,30.f=6,8,p,10,6

Answer 1

Total f = 30+p
fx = 60,120,20p,250,180
Total fx = 610+20p
20.2=610+20p/30+p
606+20.2p=610+20p
20.2p-20p=610-606
0.2p=4
P= 20

Answer 2

Hi there!

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What is Mean?

The average of a given set of numbers is called the Arithmetic mean, or simply the mean, of the given numbers.

Mean = $\frac{Sum \: of \: observations }{Number \: of \: observations }$

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For your solution to the given question refer to the attachment.

Thanks for the question!

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