Tag: regression

All the articles with the tag "regression".

• The Illusion of Significance: Why p-value Variable Selection Breaks Marketing Mix Models

  27 Jun, 2026

  Stepwise regression produces overconfident models with biased estimates — here's why that matters for MMM, and how Bayesian shrinkage priors fix the problem without breaking your causal identification.

• Noisy Covariates Bias Your Coefficients Toward Zero

  26 Jun, 2026

  When a predictor in your regression is measured with error, its coefficient shrinks toward zero in a predictable, quantifiable way — here's the math and the Bayesian fix.

• The Table 2 Fallacy: Your Control Variables Aren't What You Think

  25 Jun, 2026

  Controlling for a variable to identify your treatment effect doesn't mean that variable's coefficient is causally interpretable — and confusing the two is surprisingly common.