significance level	sample size (n)	Heteroscedasticity Test
significance level	sample size (n)	level of hetero	Breusch- Godfrey test	studentized Breusch-Pagan tes	White’s Test	Non-constant Variance Score Test	Park test	Spearman Rank	GLEJSER test	Goldfeld- Quandt test	Harrison- McCabe test
5%	n = 30	sigma = 0	34	137	128	35	241	41	66	50	7
5%	n = 30	sigma = 0.1	89	228	184	211	516	168	48	122	14
5%	n = 30	sigma = 0.3	93	335	264	253	602	195	46	139	12
5%	n = 30	sigma = 0.5	93	327	255	257	605	196	46	139	10
5%	n = 30	sigma = 0.7	93	335	249	257	608	198	47	139	10
5%	n = 30	sigma = 0.9	93	333	251	260	608	198	47	138	10
5%	n = 50	sigma = 0	40	151	139	43	257	61	47	59	28
5%	n = 50	sigma = 0.1	100	287	235	326	593	187	48	166	33
5%	n = 50	sigma = 0.3	104	374	359	383	662	224	43	183	40
5%	n = 50	sigma = 0.5	103	367	365	382	659	223	43	186	40
5%	n = 50	sigma = 0.7	103	359	368	382	656	222	45	186	40
5%	n = 50	sigma = 0.9	103	363	367	383	655	222	45	187	40
5%	n = 100	sigma = 0	48	139	128	40	273	57	58	63	55
5%	n = 100	sigma = 0.1	164	354	305	446	706	194	55	187	69
5%	n = 100	sigma = 0.3	174	429	471	498	747	218	45	204	69
5%	n = 100	sigma = 0.5	172	436	482	498	748	220	46	206	68
5%	n = 100	sigma = 0.7	172	439	483	498	750	219	47	206	69
5%	n = 100	sigma = 0.9	172	436	479	499	749	219	47	206	68
5%	n = 200	sigma = 0	63	150	123	63	301	59	55	55	68
5%	n = 200	sigma = 0.1	266	491	405	580	858	216	45	212	78
5%	n = 200	sigma = 0.3	278	543	611	635	878	244	45	236	80
5%	n = 200	sigma = 0.5	277	552	622	638	873	248	45	239	80
5%	n = 200	sigma = 0.7	277	547	625	639	873	249	45	243	83
5%	n = 200	sigma = 0.9	278	543	627	639	874	249	45	243	83