# The mean and stan

To Find: Find the correct mean and standard deviation.

Explanation: Here, n=100,

X =

So, Corrected

Corrected

Now, Standard variance = 3

Since, Variance =

Variance = 9

X =

9 =

9 =

Corrected

Corrected

Correct mean =

Corrected Variance =

409.22-400

Corrected variance =9.22

Now, Corrected Standard Deviation =

Correct Deviation is 3.04

Hence, The correct Mean is 20 and Correct SD is 3.04

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