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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