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1. Overfitting is defined as making unreasonably high demands on the data at hand.

   What is Overfitting Regression Models?

   When a statistical model starts to describe all random error within the data instead of correlations between variables, it is said to have overfit. This issue arises because when model is very complicated.

   Some characteristics of overfitting regression models are-

   • Overfitting in regression analysis can result in inaccurate R-squared values, regression coefficients, or p-values. I
   • Regression models that are overfit contain more terms than there are observations.
   • When this happens, the population’s true associations are not accurately represented by the regression coefficients, which instead reflect the noise.
   • It is rare that a regression model which is specifically designed to match the random anomalies of one sample will also suit the random anomalies of another sample.

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