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Using assumed mean method find the mean weight of 40 students Using the data given below.
In assumed-mean method, we need to assume a mean value (the near to middle or middlemost value) from xi’s.
We have the following table.
In assumed mean method, arithmetic mean is given by
Where, A = assumed mean = 53
∑fidi = -17
& ∑fi = 40
Putting all these value in the formula, we get
Thus, mean weight of 40 students is 52.575 kg.
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