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Table 3 Statistics of Δ x 205, Δ x 21, x U6, y DV (see Eq. (2)), y opt (see Eq. (10))

From: Statistical analysis of a Bayesian classifier based on the expression of miRNAs

Measure Class Set size \(\overline {X}\) S TN t-test
Δ x 205 target 18 1.7(5) 2.2(4) 0.71 2·10−8
  versus 15 –4.6(6) 2.4(5) 0.26  
Δ x 21 target 19 –6.5(3) 1.4(2) 0.53 0.90
  versus 16 –6.6(6) 2.4(4) 0.94  
x U6 target 19 25.0(3) 1.4(2) 0.40 0.14
  versus 16 25.8(5) 1.9(3) 0.25  
y DV target 18 4.9(5) 2.0(3) 0.96 5.5·10−11
  versus 15 –1.3(4) 1.7(3) 0.98  
y opt target 18 6.9(5) 1.9(3) 0.78 2.6·10−11
  versus 15 0.7(4) 1.6(3) 0.24  
  1. The digits in parentheses correspond to the uncertainty on the respective least significant digits. The column marked with TN (test of normality) contains the p-values yielded by the Shapiro-Wilk test to check whether the data contained in a histogram are consistent with a normally distributed parent population. Finally, the rightmost column reports the p-value of Student’s t-test to check the null hypothesis that the target and versus sets have the same population mean; to this purpose, the variance is estimated separately for each group and the Welch modification to the number of degrees of freedom is used