Collaborative-Adversarial Pair Programming

Table 8

Summary of control experiments and their results.

Null hypothesis	Data properties	Statistical test	Result	Reject?
H01 (Duration)	Normal	Student’s 𝑡-test	𝑃<0.0001	Yes
	Equal variance
	No outliers
H02 (CostOverall)	Normal	Student’s 𝑡-test	𝑃<0.0001	Yes
	Equal variance
	No outliers
H03 (CostCoding)	Normal	Mann-; Whitney 𝑈 test	𝑃<0.0001	Yes
	Equal variance
	Outliers
H04 (Correctness)	Not applicable	None	Number of acceptance test cases failed in CAP is less than PP	Yes