1. What is a classification model? As the classification model serves two vital functions in data mining: predictive and descriptive model. Explain the models critical application with relation to an industry of your choice?

2. Describe a decision tree? From chapter 3, Figure 3.4 depicts a decision tree for the mammal classification problem. The tree has three types of nodes: a root node, internal node, and leaf nodes. Each node is associated with a class label. Describe a similar decision tree with four nodes and explain the class labels?