Research on the Influence Mechanism of the Across-Industrial-Chain Investment Speed on Innovation Performance of AI Enterprises: Improvement Path of Artificial Intelligence Technology Application

Table 3

Overall descriptive statistics.

Variable name	Observed value	Mean	Standard deviation	Minimum	Maximum
Ftfp	13041	0.4605	0.4187	−0.1910	2.4390
Speed	13011	0.1649	0.1905	0.0000	2.1331
Lnts	12994	5.6752	3.7056	0.0000	138.000
Rdratechain	11005	0.1131	0.0182	0.0661	0.1811
Chain	9282	2.6787	2.8554	0.0000	12.0370
Age	13041	14.3900	5.2485	0.0000	56.0000
Lnuncer	13041	15.5730	1.0448	9.7061	17.7150
Roa	13041	8.5420	20.5960	−1611.0000	1061.6000
Owner	9911	0.3719	0.4833	0.0000	1.0000
Indgrow	13041	12.1500	13.9060	−65.0300	70.4600
Lnsize	12647	12.2530	1.3751	5.5483	19.2980
Lngdp	13041	19.4220	0.7431	15.4400	20.4060