Table 4

Results of Johansen’s co-integration

MetalTestH0Test statisticCritical value (0.05)p”-value
CopperTraceR = 0292.91715.4940.000*
R = 13.6173.8410.057
Maximum eigenvalueR = 0289.30014.2640.000*
R = 13.6173.8410.057

Note(s):R” refers to the number of cointegrating vectors under the null hypothesis

*Indicates that the null hypothesis is rejected at a 1 per cent statistical level

Source(s): Authors’ calculation

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