Table 7

Selection of the appropriate model (dependent variable = ATR)

PurposeNull hypothesisTestt-statistics
OLS vs FEMAll ui = 0Restricted F-testF(71, 328) = 22.05***
OLS vs REMσ2u = 0Breusch–Pagan Lagrange multiplier testχ2(1) = 528.71***
FEM vs REMDifference in coefficients is not systematicHausman testχ2(9) = 60.25***

Note(s):***Significant at 1% level

Source(s): Calculated by researchers

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