Question

the mean of following frequency distribution is 50 and the sum of all frequencies is 120.find the missing frequencies x and y.

Answer 1

the answer is the un blurred part... hope it helps you.

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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Thanks for the question!

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