Data Science Miscellaneous MCQ Questions and Answers

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Each section contains 100 MCQs on Data Science Miscellaneous .

What is the main purpose of "time series decomposition" in time series analysis?

A) Separating a time series into its components, including trend, seasonality, and noise B) Reducing the dimensionality of data C) Creating a predictive model D) Visualizing time series data

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

In machine learning, what is the term for a technique that generates synthetic data points to balance class distribution?

A) Regularization B) Feature extraction C) Undersampling D) Oversampling

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

What does the term "p-value" represent in statistical hypothesis testing?

A) A measure of central tendency B) A measure of data spread C) A confidence interval D) The probability of observing a test statistic as extreme as, or more extreme than, what was observed, assuming the null hypothesis is true

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Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

In data science, what is the term for the process of aggregating data from multiple sources into a single dataset?

A) Data integration B) Data augmentation C) Data normalization D) Data imputation

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

What is the primary purpose of "t-SNE" (t-distributed stochastic neighbor embedding) in data visualization?

A) To create decision boundaries B) To perform feature scaling C) To calculate the mean squared error D) To reduce the dimensionality of data while preserving pairwise similarities

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

Which of the following is effective way of checking validity of data analysis?

A) Re-run the analysis B) Review the code C) Check the sensitivity D) All of the mentioned

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Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

Which of the following function is for single checkbox widget?

A) checkboxInput B) dateInput C) singleboxInput D) all of the mentioned

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Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

Which of the following is used to change active graphic device?

A) dev.set B) dev.int C) dev.win D) all of the mentioned

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

How many stages commonly occurs in creation of plot?

A) 2 B) 5 C) 8 D) All of the mentioned

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

Which of the following analysis is a statistical process for estimating the relationships among variables?

A) Causal B) Regression C) Multivariate D) All of the mentioned

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

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Data Science Miscellaneous MCQ Questions and Answers | Data Science MCQs