result

value	95	96	97
sample size	46	46	46
mean	2.08696	1.19565	1.63043
variance	0.170048	0.205314	0.282609
standard deviation	0.412369	0.453116	0.53161
mean absolute deviation	0.202268	0.323251	0.493384
coefficient of concentration	0.0584239	0.137945	0.15913
coefficient of skewness	2.64171	2.3056	-0.08945
coefficient of kurtosis	9.96979	4.16166	-1.08981

	frequency distribution 95	frequency distribution 96	frequency distribution 97	cumulative distribution 95 function	cumulative distribution 96 function	cumulative distribution 97 function
0	0	0	0	0	0	0
1	1	38	18	0.0217391	0.826087	0.391304
2	41	7	27	0.913043	0.978261	0.978261
3	3	1	1	0.978261	1	1
4	1			1		

Kruskal-Wallis test
chi-square test	2	degrees of freedom
chi-square value	58.1932		critical probability	2.30942e-13
reference chi-square value	5.99146		reference critical probability	0.05
reference chi-square value	9.21034		reference critical probability	0.01