[Gretl-users] Re: How to adjust heteroskedasticity

Am 21.04.2020 um 20:29 schrieb robdans2(a)gmail.com: Leaving aside the question of whether that would be a proper "fix", you could add an impulse dummy to your equation for that observation. You could either slightly abuse the menu entry Add/observation range dummy (or your translated equivalent) for that, or you could type something like: series impulsed = (t == 50)    # cross-section or series impulsed = (t == 2000:1) # time series cheers sven