Compute the standard deviation of the Final Assessment scores of: 15.63 15.63 21.88 25 25 28.13 31.25 31.25 31.25 34.38 34.38 40.63 43.75 43.75 46.88 46.88 46.88 50 50 53.13 53.13 53.13 56.25 59.38 59.38 62.5 62.5 62.5 62.5 65.63 68.75 68.75 81.25 81.25 87.5 87.5