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Question

The following table shows the weight of 12 players:
Weight (in kg) 48 50 52 54 58
Number of players 4 3 2 2 1

Find the median and mean weights.
Using empirical formula, calculate its mode.

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Solution

We will prepare the table given below:



Number of terms (N) is 12, which is an even number.Median =12N2th observation+N2+1th observation =6th observation+7th observation =1250+50Median =50Mean =(fi×xi)fi =61212Mean = 51Using empirical formula:Mode = 3(Median)-2(Mean) = 150-102Mode=48

Hence, the median is 50, the mean is 51 and the mode is 48.

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