Explore topic-wise MCQs in Data Science.

This section includes 4 Mcqs, each offering curated multiple-choice questions to sharpen your Data Science knowledge and support exam preparation. Choose a topic below to get started.

1.

Residuals are useful for investigating best model fit.

A. True
B. False
Answer» C.
Discussion
2.

Which of the following refers to the circumstance in which the variability of a variable is unequal across the range of values of a second variable that predicts it?

A. Heterogeneity
B. Heteroskedasticity
C. Heteroelasticty
D. None of the mentioned
Answer» C. Heteroelasticty
Discussion
3.

Which of the following is correct with respect to residuals?

A. Positive residuals are above the line, negative residuals are below
B. Positive residuals are below the line, negative residuals are above
C. Positive residuals and negative residuals are below the line
D. All of the mentioned
Answer» B. Positive residuals are below the line, negative residuals are above
Discussion
4.

Which of the following implies no relationship with respect to correlation?

A. Cor(X, Y) = 1
B. Cor(X, Y) = 0
C. Cor(X, Y) = 2
D. All of the mentioned
Answer» C. Cor(X, Y) = 2
Discussion