=== Análisis estadístico A/B/C/D (n=50 casos held-out) ===

[categoria_ok] medias A/B/C/D = 0.26/0.70/0.36/0.76
  Friedman: chi2=51.85, p=0.0000 | Kendall's W=0.147
  Wilcoxon (D vs cada uno, p Holm-ajustada): D-A: p=0.0000 | D-B: p=0.1797 | D-C: p=0.0001
  IC95% bootstrap (D − A): [+0.360, +0.640]

[concepto_ok] medias A/B/C/D = 0.18/0.50/0.48/0.54
  Friedman: chi2=18.20, p=0.0004 | Kendall's W=0.066
  Wilcoxon (D vs cada uno, p Holm-ajustada): D-A: p=0.0002 | D-B: p=0.8772 | D-C: p=0.8772
  IC95% bootstrap (D − A): [+0.220, +0.500]

[identificacion(D1)] medias A/B/C/D = 2.04/3.80/2.44/4.04
  Friedman: chi2=51.85, p=0.0000 | Kendall's W=0.147
  Wilcoxon (D vs cada uno, p Holm-ajustada): D-A: p=0.0000 | D-B: p=0.1797 | D-C: p=0.0001
  IC95% bootstrap (D − A): [+1.440, +2.560]

[trazabilidad(D5)] medias A/B/C/D = 1.72/3.00/2.92/3.16
  Friedman: chi2=18.20, p=0.0004 | Kendall's W=0.066
  Wilcoxon (D vs cada uno, p Holm-ajustada): D-A: p=0.0002 | D-B: p=0.8772 | D-C: p=0.8772
  IC95% bootstrap (D − A): [+0.880, +2.000]

