Calculate the A.M. and S.D. for the following distribution:

Given, The data is given in table/
To Find: Find the standard deviation
The formula used: SD = ![]()
Explanation:

Now, N=79,
, ![]()
Mean ![]()
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Variance = 305.20
Standard Deviation ![]()
SD = 17.47
Hence, The standard deviation is 17.47
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