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Table 19 Descriptive statistics of the unit test case metrics (Univariate clustering - CBO)

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

  CBO Cluster 1 Cluster 2 Cluster 3 Cluster 4 Cluster 5
  Nb. Obs. 506 284 153 64 20
TLOC Min 6 9 12 18 16
Max 1620 2379 2624 1353 4063
Mean (μ) 91.81 175.62 236.54 149 477.85
Std. Dev (σ) 144.91 298.76 421.83 206.07 854.09
Coef. of var (C v = σ/μ) 1.578 1.701 1.783 1.383 1.787
TASSERT Min 0 0 0 1 1
Max 615 1058 1156 305 391
Mean (μ) 20.32 46.26 65.52 38.31 93.3
Std. Dev (σ) 42.41 116.36 161.77 58.25 101.53
Coef. of var (C v = σ/μ) 2.087 2.515 2.469 1.52 1.088
TDATA Min 0 0 0 0 0
Max 482 393 482 223 758
Mean (μ) 12.84 25.68 33.76 22.05 70.35
Std. Dev (σ) 31.17 52.80 67.72 30.42 161.49
Coef. of var (C v = σ/μ) 2.427 2.056 2.006 1.38 2.295
TINVOK Min 0 0 3 1 6
Max 175 401 399 190 516
Mean (μ) 25.22 38.76 54.06 35.69 84.05
Std. Dev (σ) 26.18 42.52 59.67 30.24 107.34
Coef. of var (C v = σ/μ) 1.038 1.097 1.104 0.847 1.277
TNOO Min 0 1 1 1 1
Max 164 242 238 54 148
Mean (μ) 6.76 11.05 19.46 8.66 21.85
Std. Dev (σ) 13.15 22.79 37.89 10.39 33.04
Coef. of var (C v = σ/μ) 1.941 2.063 1.947 1.2 1.512