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Question

The mean of the ungrouped data is given by:

A
Mean =xif
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B
Mean =xn
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C
Mean =fxn
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D
Mean =a+fxn
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Solution

The correct option is B Mean =xn

We know, Mean is given by,

Mean=Sum of the elementsTotal number of elements.

Let us suppose that total n numbers give in ungrouped data are x1,x2,x3.........xn.
Then mean of those observation will be give by
¯x=x1,x2,x3.........xnn=Σxn

i.e. Mean =xn.

Hence, option B is correct.


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