What is the MAPE for this model?
Here are 10 questions, I already finished, but there has problems, I fix 1-8, need you help me fix 9 and 10.Develop a regression model to predict the index popularity
- Use the training set to build a model with all variables including dummies indicating the type of food
- What is the MAPE for this model?
- Do the signs of the coefficients are the same as the sign of the correlations with popularity index?
- Can you drop any variable to improve the model?
- Has the MAPE improve after dropping that variable?
- Are all coefficients significant on this model?
- Try to improve the model by dropping variables or combining variables
- Plot the fitted versus the residuals for the training and for the testing set. Can you observed strange predicted values or outliers?
- Try to include the outlier in the testing set or remove it.
- What is the model? and what does it mean?
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