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The weights (in kg) of 50 wrestlers are ...

The weights (in kg) of 50 wrestlers are recorded in the following table.

Find the mean weight of the wrestlers.

Text Solution

Verified by Experts

We first find the class mark `x_(i)` of each class and then proceed as follows

Assumed mean(a)=125,
Class width (h)=10 and total observation(N)=50
By assumed mean method `"Mean"bar(x)=(sumf_(i)x_(i))/(sumf_(i))`
`=125+(-80)/(50)`
125-1.6=123.4kg
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