Quiz-2

What is the primary goal of Linear Regression?

• To classify data into categories

• To predict a continuous output value

• To find clusters in data

• To predict the probability of an event

The learner is trying to predict housing prices based on the size of each house. What type of regression is this?

• Multivariate Logistic Regression

• Logistic Regression

• Linear Regression

• Multivariate Linear Regression

What function is used for hypothesis representation in logistic regression?

• Cos function

• Laplace transformation

• Lagrange’s function

• Sigmoid function

Can a cancer detection problem be solved by logistic regression?

• Sometimes

• No

• Yes

• Depends on the dataset

Which of the following statements is not true about k Nearest Neighbor?

• It belongs to the supervised learning domain

• It has an application in data mining and intrusion detection

• It is non-parametric

• It is not an instance-based learning algorithm

Which one of the following terms is not used in the Bayes’ Theorem?

• Prior

• Unlikelihood

• Posterior

• Evidence

Which of the following statements is not true about the Decision tree?

• A Decision tree is also known as a classification tree

• Each element of the domain of the classification in decision tree is called a class

• It is a tree in which each internal node is labeled with an input feature

• It cannot be used in data mining applications as it only classifies but not predicts anything

Which of the following is not a Decision tree algorithm?

• ID3

• C4.5

• DBSCAN

• CART

Consider we are performing Random Forests based on classification data, and the relative frequencies of the class you are observing in the dataset are 0.65, 0.35, 0.29 and 0.5. What is the Gini index?

• 0.423

• 0.084

• 0.12

• 0.25

Given the entropy for a split, Esplit = 0.39 and the entropy before the split, Ebefore = 1. What is the Information Gain for the split?

• 1

• 0.39

• 0.61

• 2.56