A Flexible Polynomial Expansion Method for Response Analysis with Random Parameters

Table 2

Relative error of mean and variance of the sound pressure’s imaginary parts.

x	Relative error of mean		Relative error of variance
	IJCEM	gPCEM	IJCEM	gPCEM
0m	0.01%	0.01%	1.1%	13.4%
0.2m	0.01%	0.01%	0.6%	13.0%
0.5m	0.01%	0.01%	1.3%	13.5%
1m	0.01%	0.01%	1.0%	13.2%