Calculating Means and Standard Deviations
= 11.3 = 3.36Note many calculators will automatically calculate the standard deviation after you input thenumbers. In addition spreadsheet programs like Excel may also be programmed to calculate astandard deviation for a group of data. You are certainly welcome to use these automated methodsto calculate your standard deviations. However, you should still be able to calculate a standarddeviation using the formula approach described above.