(a) Calculate the entropy of the entire population.

(b) If student is chosen at the root node, calculate the information gain.

(c) Calculate the Gini Index of student.

(d) Suppose Age is chosen at the root node, and then Income is chosen as the next attribute. Draw the decision space

A decision tree classifier needs to be designed to determine whether a person is going to buy a computer based on several attributes. The table of training set is given below