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October 25, 2014

October 25, 2014

Posted by **MMK** on Wednesday, March 14, 2007 at 7:39pm.

a) What is the estimate of sigma squared?

b) What is the estimate of sigma?

c) What are the degrees of freedom?

Sigma = standard deviation

Sigma^2 = variance

(Standard deviation is the square root of the variance.)

Square the residuals, total the squared values, then divide by n-1 (n = sample size). This will be the variance. Then take the square root of the variance for the standard deviation.

I hope this will help.

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