Math, C, Calculus, Numerical Analysis, Monte Carlo.
size (i.e. x=[0,4], x=[4,8], x=[8,12], x=[12,16], x=[16,20]). The following code compares normal Monte Carlo integration with Stratified Sampling. Normal  Estimate for 0.0 -> 20.0 is 2.697, STD = 1.6518, (16 iterations) Estimate for 0.0 -> 20.0 is 4.057, STD = 0.8851, (64 iterations) Estimate for