For step size 0.040 Cumulative error for the series is 0.891065 Average error for the series is 0.017472 For step size 0.020 Cumulative error for the series is 0.476240 Average error for the series is 0.004715 For step size 0.010 Cumulative error for the series is 0.244311 Average error for the series is 0.001215 For step size 0.005 Cumulative error for the series is 0.120004 Average error for the series is 0.000299