Meaning of file names: 

CR-bp-S-KS-AoV-Subj.R 
   R code for obtain: 
	CR=Comprensión de Requerimientos
	bp=boxplot
	S= Summary
	KS = Kolmogorov-Smirnov test for normal distribution
	AoV = Analysis of Variance 
	Subj = Variable under analysis - Number of Subjects. 

CR-Subjects.xlsx
   Excel file with data of: 
	Subjects= Subjects and Score for get Number of subjects with corect answers.