Survey on the effect of recreational activities on university performance collected on 485 students.
EsitoA data frame with 18 observations on the following 4 variables
freqfrequency of students in the in the cross classification of the following three variables
sexfactor with 2 levels (f, m)
oreweekly hours of recreational activities, factor with 3 levels (m10, less than 10 hours;
m15, between 10 and 15 hours; m20, more than 15 hours)
votouniversity performance in a given exam, factor with 3 levels (ins, not sufficient;
suff, sufficient; buono, good)