Zomato Interview Questions | Predictive Model
Question
You created a predictive model of a quantitative outcome variable using multiple regressions. What are the steps you would follow to validate the model?
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Answer ( 1 )
Well you can split the data into train and test set.
Build the model on the train data, look at the value of the R^2,MSE or RSS.
When you test the model on test data, the results should not be off by a great margin.
Generally, less than 5% lower accuracy compared to the test set is desirable.