Model comparison

Test

Statistic

Probability

Pooled versus fixed

F test that all u_i = 0

F (10, 424) = 142.94

Prob > F = 0.0000

Pooled versus random

Breusch and Pagan Lagrangian multiplier test

chibar2(01) = 3344.54

Prob > chibar2 = 0.0000

Fixed versus random

Hausman Test

chi2(5) = (b − B)'[(V_b − V_B)⁽⁻¹⁾](b − B) = 19.83

Prob > chi2 = 0.0013