Explore topic-wise MCQs in Data Science.

This section includes 9 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.

Power is the probability of rejecting the null hypothesis when it is true.

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

Which of the following tool is used for estimating standard errors and the bias of estimators?

A. knitr
B. jackknife
C. ggplot2
D. all of the mentioned
Answer» D. all of the mentioned
Discussion
3.

Which of the following tool is used for constructing confidence intervals and calculating standard errors for difficult statistics?

A. baggyer
B. bootstrap
C. jacknife
D. none of the mentioned
Answer» C. jacknife
Discussion
4.

The pooled estimator is a mixture of the group variances, placing greater weight on whichever has a larger sample size.

A. True
B. False
Answer» B. False
Discussion
5.

Which of the following is the oldest multiple testing correction?

A. Bonferroni correction
B. Bernoulli correction
C. Likelihood correction
D. All of the mentioned
Answer» B. Bernoulli correction
Discussion
6.

Point out the wrong statement with respect to FDR.

A. FDR is difficult to calculate
B. FDR is relatively less conservative
C. FDR allows for more false positives
D. None of the mentioned
Answer» B. FDR is relatively less conservative
Discussion
7.

What is the purpose of multiple testing in statistical inference?

A. Minimize errors
B. Minimize false positives
C. Minimize false negatives
D. All of the mentioned
Answer» E.
Discussion
8.

Which of the following value is the most common measure of statistical significance ?

A. P
B. A
C. L
D. All of the mentioned
Answer» B. A
Discussion
9.

Which of the following testing is concerned with making decisions using data?

A. Probability
B. Hypothesis
C. Causal
D. None of the mentioned
Answer» C. Causal
Discussion