Question: The following relative frequency distribution was constructed from a sample of 50. Class ....Relative Frequency 0 up to 2 ...0.34 2 up to 4 ...0.20

The following relative frequency distribution was constructed from a sample of 50.

Class ....Relative Frequency

0 up to 2 ...0.34

2 up to 4 ...0.20

4 up to 6 ...0.40

6 up to 8 ..0.06


a. Calculate the sample mean, 

b. Calculate ample variance, and the sample standard deviation.

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