how do you get a standard deviation of 1.04563 when the sum of x=238, n=25 and the mean is 9.52
2 answers
Please read and follow directions.
With your data, you don't, unless you meant
∑(mean-x)^2 = 238
You have to subtract each of the scores from the mean and square each difference. Find the sum of these squares. Divide that by the number of scores to get variance.
Standard deviation = square root of variance
∑(mean-x)^2 = 238
You have to subtract each of the scores from the mean and square each difference. Find the sum of these squares. Divide that by the number of scores to get variance.
Standard deviation = square root of variance
4 answers