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Table 4 Descriptive statistics for the experiment’s dependent variables

From: Assessing the benefits of search-based approaches when designing self-adaptive systems: a controlled experiment

Generational distance (GD)
  Mean( μ ) Median Std. dev.
Search-based approach (IA) 2.40 2.45 1.08
Style-based approach (RA) 2.59 2.41 1.03
Difference (IA −RA) -0.19 -0.62 1.32
Architecture complexity (AC)
  Mean( μ ) Median Std. dev.
Search-based approach (IA) 6.46 6.65 2.77
Style-based approach (RA) 7.02 7.05 2.70
Difference (IA −RA) -0.57 -1.90 3.47
Questionnaire grade (QG)
  Mean( μ ) Median Std. dev.
Search-based approach (IA) 6.85 7.00 1.43
Style-based approach (RA) 7.04 7.25 1.27
Difference (IA −RA) -0.19 -0.50 1.51