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Question

The weights in kg of 8 new born babies are 3, 3.2, 3.4, 3.5, 4, 3.6, ,4.1, 3.2. Find the mean weight of the babies.

A
3
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B
3.5
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C
4
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D
4.5
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Solution

The correct option is B 3.5
Given, the weights are 3,3.2,3.4,3.5,4,3.6,4.1,3.2.
Number of babies =8.

We know, Mean is given by,

Mean=Sum of the elementsTotal number of elements.


Therefore, mean weight
=3+3.2+3.4+3.5+4+3.6+4.1+3.28
=288=3.5 kg.

Hence, option B is correct.

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