Multivariate Regression (Regression)

Using the maize only version of eth_allrounds_final.dta with per hectare inputs, run a multivariate regression: reg yield_kg fert labor i.irr

  1. How did the coefficient on fert change compared to the simple regression?
  2. Interpret the new coefficient on fert using the phrase “holding fixed.”
  3. What is the coefficient on 1.irr? Explain it as a difference in averages.