Journal of Software Engineering Research and Development

Table 9 PCA results – all systems

From: A metrics suite for JUnit test code: a multiple case study on open source software

All Systems	F1	F2	F3	F4	F5
Variability (%)	58.040	33.321	4.968	2.048	1.623
% Cumulated	58.040	91.361	96.329	98.377	100.000
	Correlation			Square-cosine
	F1	F2		F1	F2
TLOC	0.825	0.498	TLOC	0.680	0.248
TASSERT	0.848	0.398	TASSERT	0.718	0.159
TDATA	0.831	0.400	TDATA	0.691	0.160
TINVOK	0.395	0.917	TINVOK	0.156	0.842
TNOO	0.810	0.507	TNOO	0.656	0.257

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