Decision trees, CART, CHAID, Random Forest, Ensemble using Excel

Decision tree is the most powerful and popular tool for classification and prediction. A decision tree typically starts with a single node, which branches into possible outcomes. Decision trees classify the examples by sorting them down the tree from the root to some leaf node, with the leaf node providing the classification to the example.
This zip folder contains 5 workbooks-
1. CART Decision Tree for Classification in Excel which contains extremely detailed calculation steps involved in each splitting of the Node starting from Root Node to leaf nodes without use of any code.
2. CART Regression Tree for Classification in Excel which also contains extremely detailed calculation steps involved in each splitting of the Node starting from Root Node to leaf nodes without use of any code
3. Boosting & Bagging in detail with simple excel functions without any code.
4. Random Forest
5. CHAID (Chi-squared Automatic Interaction Detector) largely used for segmentation.
The excel sheets comes accompanying with a PPT explaining all the steps.