Determine the mean and the standard deviation

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Reference no: EM131124094

1. When we compute the mean of a frequency distribution, why do we refer to this as an

estimated mean?

2. Determine the mean and the standard deviation of the following frequency distribution.

Class

Frequency

0 up to 5

2

5 up to 10

7

10 up to 15

12

15 up to 20

6

20 up to 25

3

Reference no: EM131124094

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