
	Kruskal-Wallis rank sum test

data:  ARRAY and categs
Kruskal-Wallis chi-squared = 78.928, 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           57.53333     23.69541       TRUE
joda-time-2.8-RandomOperatorSelection        45.83333     23.69541       TRUE
joda-time-2.8-SelectiveMutation              76.63333     23.69541       TRUE
RandomMutantSampling-RandomOperatorSelection 11.70000     23.69541      FALSE
RandomMutantSampling-SelectiveMutation       19.10000     23.69541      FALSE
RandomOperatorSelection-SelectiveMutation    30.80000     23.69541       TRUE
