Question

Compute the mean from the following
Height (in inches)- 45, 50, 52, 54, 56, 58, 60, 62, 64, 66
No. of person- 13, 15, 20, 10, 10, 12, 9, 2, 5, 4,
Use short-cut method
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Answer 1

Answer:

In the method by short

first add the height and divide by the sum of person