
	Kruskal-Wallis rank sum test

data:  ARRAY and categs
Kruskal-Wallis chi-squared = 71.738, df = 3, p-value = 1.812e-15

Multiple comparison test after Kruskal-Wallis 
p.value: 0.05 
Comparisons
                                               obs.dif critical.dif difference
joda-time-2.8-RandomMutantSampling           65.200000     23.69541       TRUE
joda-time-2.8-RandomOperatorSelection        43.333333     23.69541       TRUE
joda-time-2.8-SelectiveMutation              66.533333     23.69541       TRUE
RandomMutantSampling-RandomOperatorSelection 21.866667     23.69541      FALSE
RandomMutantSampling-SelectiveMutation        1.333333     23.69541      FALSE
RandomOperatorSelection-SelectiveMutation    23.200000     23.69541      FALSE
