Part d.

Page 4 3. (a) With the help of diagrams explain what is meant by applied to Machine Learning. overfitting and (b) Describe how K -fold cross-validation works (c) What 4 basic questions must be answered when constructing a decision tree?i2 12. (d) Consider the following dataset with two classes (circles and crosses). two attributes X1 and X2) and 11 points as represented by the diagram below: ee in which the leaf nodes correcty predict the clas for all raining samples,. Cetinbe achier Classifier? Explain. With the help of diagrams, construct a decision t 2 marks] Predicted No Predicted Yes 50 10 e) Given the following confusion matrix: Acmal No