Intelligent Data Mining Based on Market Circulation of Production Factors

Table 3

Descriptive statistics grouped by the intensity of production factors from 2018 to 2020.

Intensity of production factors			Minimum	Maximum	Mean	Standard deviation
Labor intensity	R&D investment intensity	64	0.003	0.450	0.045	0.061
	Tobin’s	64	0.976	9.736	3.613	1.838
	Operating gross profit margin	64	0.056	0.663	0.304	0.141
Capital intensity	R&D investment intensity	462	0.003	0.166	0.051	0.028
	Tobin’s	462	0.619	19.544	3.623	2.514
	Operating gross profit margin	462	0.030	0.959	0.347	0.169
Technology intensity	R&D investment intensity	597	0.009	0.728	0.091	0.084
	Tobin’s	597	0.844	18.105	4.346	2.298
	Operating gross profit margin	597	-0.060	0.980	0.358	0.182