Table 3 Collinearity test and selection of variables.

From: What drives intercity venture capital investment? A comparative analysis between multiple linear regression and random forest

Variables

Step 1

Step 2

Step 3

GDP

13.841

7.139

6.929

Growth

1.486

1.319

1.247

Tertiary

1.923

1.813

1.811

IPO

4.559

4.461

3.803

VCF

4.234

4.218

4.217

Deposit

22.049

  

Marketization

2.755

2.529

2.219

University

7.842

7.780

7.776

Student

4.678

4.609

4.397

RaD

5.118

5.116

4.532

Patent

10.989

10.086

 

Airport

3.197

3.182

3.171

AIR

2.835

2.769

2.767

HSR

1.661

1.639

1.632

DIS_Center

2.398

2.289

2.278

Administration

4.477

4.191

4.176

ETDZ

1.542

1.534

1.450

HTIZ

1.849

1.827

1.808

Baidu_Index

2.039

2.019

2.003

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