Question

If the mean of the above data is 20.2 find the value of p.

Answer 1

(10×6+15×8+20×p+25×18+30×6)÷38+p=20.2
:60+120+20p+450+180=20.2×(38+p)
:20p=767.6+20.2p-810
:-0.2p=-42.4
:p=212

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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