A boy threw a ball 25 times. Kinetic energy of the ball is as follows: 25.66, 30.71, 18.32, 16.77, 24.05, 19.49, 14.22, 20.03, 14.21, 28.43, 28.03, 22.07, 29.48, 14.91, 17.12, 15.12, 27.97, 23.02, 23.37, 27.55, 23.48, 19.90, 15.78, 28.88, 29.71 J. Calculate a point estimate of the proportion of all ball throws whose energy deviation from the mean is larger than the standard deviation.