Numerical Approximation of Higher-Order Solutions of the Quadratic Nonlinear Stochastic Oscillatory Equation Using WHEP Technique

Table 4

The computing time for each level and for the response mean and variance compared with the total time.

	Time (sec.)	Order of integrals
Level 0	0.041	0
Level 1	0.015	1
Level 2	0.29	1 & 2
Level 3	0.82	1 & 2 & 3
Level 4	19.55	1 & 2 & 3 & 4
𝐸[𝑥]	0.0029	0
Var[𝑥]	0.16	1 & 2 & 3
Total time	20.88