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Table 9 Kruskal-Wallis tests on DEA efficiency scores ( n₁ = 139)

From: Analyzing the efficiency of small and medium-sized enterprises of a national technology innovation research and development program

i	GS Class	n _i	Median	Rank mean	Z_i
1	GS-Class1	34	0.816	95.5	4.25^***
2	GS-Class2	69	0.588	66.0	-1.15
3	GS-Class3	20	0.453	46.3	-2.84^***
4	GS-Class4	8	0.794	85.3	1.10
5	GS-Class5	8	0.436	39.9	-2.18^**
	Total	139		70.0

H = 27.04^***, DF = 4, P-value = 0.000 (tied-ranks adjusted).

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