The population mean is the average of all the items in a population. X i N m s 2 X_i sim N mu sigma2 X i. Dont forget to divide by the square root of n in the denominator of z.
Divide the result by total number of observations n minus 1.
Subtract the mean from each of the data values and list the differences. Dont forget to divide by the square root of n in the denominator of z. The mean average for the list will appear in the cell you selected. If youre seeing this message it means were having trouble loading external resources on our website.