Definition of "regressor" []

• That which regresses, or causes regression (noun)

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• "The only non-trivial difference from their study and what I outlined is that I forgot to say to include income as a regressor, an unfortunate oversight by me."
• "I'll bet you a beer that you'd find a coefficient on the ln (beer tax) regressor that is less than zero at a statistically significant level."
• "He used seven variables at a time: 3 fixed regressors (life expectancy in 1960, primary school enrollment in 1960, and log GDP per capita in 1960), 3 rotating regressors, and the regressor that he's testing (plus a constant, of course)."