We are going to calculate the standard deviation for the following set of sample data. 1,3,7,9,2 1) First, calculate the mean. ¯ x = 2) Fill in the table below. Fill in the differences of each data value from the mean, then the squared differences. 3) Calculate the standard deviation. x x − ¯ x ( x − ¯ x ) 2 1 3 7 9 2 Total Standard deviation: s = √ ∑ ( x − ¯ x ) 2 n − 1 = Round to two decimal places