Table 2.

Analyses of Table 1 data with Student's t‐test.

Information	Comparisons 2 × 2
	P	PR	P	S	PR	S
Mean	53.9	81.2	53.9	68.9	81.2	68.9
Variance	607	277.4	608	382.3	277.4	382.3
Observations	8	8	8	8	8	8
Pooled variance	442.7		495.1		329.8
H0 difference	0		0		0
Df	14		14		14
t‐Calculated	−2.6		−1.3		1.3
P (T ≤ t) tailed	0.01		0.10		0.10
t‐Tailed critical	1.8		1.8		1.76131
P (T ≤ t) two‐tailed	0.02		0.20		0.20
t‐Two‐tailed critical	2.1		2.1		2.1