Table A7.

t-Test: two samples with different variances, comparison between their s values, part 2.

	S100F75L5	S125F75L5	S100F75L15	S125F75L15	S100F100L5	S125F100L5	S100F100L15	S125F100L15	S100F150L5	S125F150L5	S100F150L15	S125F150L15
Mean	0.483	0.935	0.708	1.299	0.578	0.595	0.859	0.659	0.605	0.975	0.827	1.073
Variance	0.004	0.020	0.002	0.095	0.003	0.003	0.001	0.002	0.007	0.012	0.001	0.012
Observations	5	5	5	5	5	5	5	5	5	5	5	5
Hypothesised Mean Difference	0		0		0		0		0		0
df	5		4		8		7		7		5
t Stat	−6.543		−4.227		−0.513		7.611		−5.945		−4.744
P(T <= t) one-tail	0.001		0.007		0.311		0.000		0.000		0.003
t critical one-tail	2.015		2.132		1.860		1.895		1.895		2.015
P(T <= t) two-tail	0.001		0.013		0.622		0.000		0.001		0.005
t critical two-tail	2.571		2.776		2.306		2.365		2.365		2.571