How does polynomial regression differ from linear regression?

  • Linear regression models relationships as curves
  • Linear regression models relationships as straight lines
  • Polynomial regression models relationships as curves
  • Polynomial regression models relationships as straight lines
Polynomial regression models relationships as curves, not straight lines. This allows polynomial regression to capture non-linear relationships, where the relationship changes direction at different levels of the independent variables. On the other hand, linear regression models relationships as straight lines, assuming a constant rate of change.
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