Collaborative-Adversarial Pair Programming

Table 3

𝑡-test results for CAP versus PP duration.

(a) The 𝑡-test procedure: statistics

Variable group	Lower CL		Upper CL		Lower CL		Upper CL
	𝑁	Mean	Mean	Mean	Std Dev	Std Dev	Std Dev	Std Err
Time CAP	6	272.64	379.17	485.7	63.364	101.51	248.97	41.442
Time PP	6	447.21	604.5	761.79	93.558	149.88	367.6	61.189
Time Diff (1-2)		−390	−225.3	−60.67	89.438	128	224.64	73.902

(b) 𝑡-Tests

Variable	Method	Variances	DF	𝑡 value	Pr>|𝑡|
Time	Pooled	Equal	10	−3.05	0.0123
Time	Satterthwaite	Unequal	8.79	−3.05	0.0142

(c) Equality of variances

Variable	Method	Num DF	Den DF	𝐹 value	Pr>𝐹
Time	Folded 𝐹	5	5	2.18	0.4125