The grade-point averages of 20 college seniors selected at random from a graduating class are in the accompanying data set available below. Calculate the standard deviation Click the icon to view the grade-point averages. The standard deviation is s = (Round to two decimal places as needed.) Grade-Point Averages 1.7 1.9 3.3 3.2 2.9 1.9 2.4 2.0 3.5 3.5 3.4 3.5 3.6 2.2 2.5 3.7 2.1 3.2 2.8 2.2 - X