
	Kruskal-Wallis rank sum test

data:  ARRAY and categs
Kruskal-Wallis chi-squared = 76.473, df = 3, p-value < 2.2e-16

Multiple comparison test after Kruskal-Wallis 
p.value: 0.05 
Comparisons
                                              obs.dif critical.dif difference
joda-time-2.8-RandomMutantSampling           73.23333     23.69541       TRUE
joda-time-2.8-RandomOperatorSelection        40.16667     23.69541       TRUE
joda-time-2.8-SelectiveMutation              60.73333     23.69541       TRUE
RandomMutantSampling-RandomOperatorSelection 33.06667     23.69541       TRUE
RandomMutantSampling-SelectiveMutation       12.50000     23.69541      FALSE
RandomOperatorSelection-SelectiveMutation    20.56667     23.69541      FALSE
