On Sat, 14 Mar 2009, Giovanni Madaro wrote:
I'm performing some panel regressions with time dummy variables.
In the results i see the Wald test. How do i interpret its
Test di Wald per la significativit� congiunta delle dummy temporali
Statistica test asintotica: Chi-quadro(3) = 75,8035
con p-value = 2,43713e-016
The p-value is very small. So the test firmly rejects the null
hypothesis that the time dummies all have zero coefficients; or in
other words it confirms that the conditional mean of the dependent
variable differs by time period.