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Median

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Question

The following table shows the weights (in kg) of 15 workers in a factory:

Weight (in kg) 60 63 66 72 75

Number of workers 4 5 3 1 2

Calculate the mean weight.

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Solution

Mean weight = $\frac{Σ (f_{i} \times x_{i})}{Σ f_{i}} = \frac{975}{15} = 65 kg$

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