Question

The mean of the following distribution is 50. Find the value of 'a' and hence the frequencies of 30 and 70. Also find the mean,median and mode. X-10,30,50,70,90 f-17,5a+3,32,7a-11,19

Answer 1

no......................

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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