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Question

Question 10
Obtain the mean of the following distribution.

Frequency(fi)Variable(xi)44861481110312

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Solution

We know that,
Mean of the data (¯x)=5i=1fixi5i=1fi=f1x1+f2x2+f3x3+f4x4+f5x5f1+f2+f3+f4+f5

=4×4+8×6+14×8+11×10+3×124+8+14+11+3

16+48+112+110+3640=32240=8.05

Hence, the mean of the given data is 8.05.


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