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Future Business Journal

Table 3 Result of unit root test

From: Trade protectionism and the manufacturing sector: a review of border closure policy in Nigeria

Variables

ADF

P–P

At level

  

GNPGR

− 2.843*

− 2.843*

INFR

− 1.884

− 0.289

MANGR

− 1.959

− 2.353

TPRT

− 1.096

− 1.096

First difference

GNPGR

− 5.714***

− 6.171***

INFR

− 4.206***

− 4.271***

MANGR

− 8.069***

− 16.454***

TPRT

− 5.122***

− 5.061***

  1. Source: Authors’ computation
  2. Significant level: * = 10%, ** = 5%, *** = 1%
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