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Home Forums Assignment courserra IBM AI Engineering Professional Certificate Machine Learning with Python Week 3 Classification Graded Quiz • 10 min

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Abhishek Tyagi
Keymaster

Question 1
Which one IS NOT a sample of classification problem?

Ans-

To predict the amount of money a customer will spend in one year.

Question 2-
Which of the following statements are TRUE about Logistic Regression? (select all that apply)

Ans-

Logistic regression can be used both for binary classification and multi-class classification
Logistic regression is analogous to linear regression but takes a categorical/discrete target field instead of a numeric one.
In logistic regression, the dependent variable is binary.

Question 3
Which of the following examples is/are a sample application of Logistic Regression? (select all that apply)

Ans-

The probability that a person has a heart attack within a specified time period using person’s age and sex.
Customer’s propensity to purchase a product or halt a subscription in marketing applications.
Likelihood of a homeowner defaulting on a mortgage.
Estimating the blood pressure of a patient based on her symptoms and biographical data.

Question 4
Which one is TRUE about the kNN algorithm?

Ans-

kNN algorithm can be used to estimate values for a continuous target.

Question 5
What is “information gain” in decision trees?

Ans-

It is the entropy of a tree before split minus weighted entropy after split by an attribute.