The sample standard deviation, s, is calculated as follows. Note that the sample mean x is used Instead of the population mean , and the denominator is one less than the number of observations in the sample. S= (x-x) n-1 The mean for sample 1 was found to be x = 10. A table like the one below is a helpful way to organize the terms and calculate the sum of the squared deviations about the mean. Complete the table. Observation (x) Sample Mean (x) Deviation about the Mean (x,-x) Squared Deviation about the Mean (x-x)2 11 10 8 10 -2 14 10 8 10 10 10 6 10 16 2