Data Science Miscellaneous MCQ Questions and Answers

1

The expected value or . . . . . . . . of a random variable is the center of its distribution.

A) mode B) median C) mean D) bayesian inference

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Answer & Solution

Answer: Option C

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2

Which of the following system most often don't have postscript viewer?

A) Windows B) Linux C) Mac D) All of the mentioned

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Answer & Solution

Answer: Option A

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3

Which of the following can be done by shiny?

A) Tabbed main panels B) Editable data tables C) Dynamic UI D) All of the mentioned

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Answer & Solution

Answer: Option D

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4

Point out the wrong statement.

A) Additive response models don't make much sense if the response is discrete, or strictly positive B) Transformations are often easy to interpret in linear model C) Regression models are used to predict one variable from one or more other variables D) All of the mentioned

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Answer & Solution

Answer: Option B

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5

Point out the correct statement.

A) On Mac, the screen device is launched with quartz B) On Windows, the screen device is launched with wind C) On Unix, the screen device is launched with x12 D) All of the mentioned

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Answer & Solution

Answer: Option A

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6

Point out the wrong statement.

A) A universal function is a function that operates on ndarrays in an element-by-element fashion B) In Numpy, universal functions are instances of the numpy.ufunction class C) Many of the built-in functions are implemented in compiled C code D) All of the mentioned

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Answer & Solution

Answer: Option B

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7

Multivariate regression estimates are exactly those having removed the linear relationship of the other variables from both the regressor and response.

A) True B) False

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Answer & Solution

Answer: Option A

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8

The beta distribution is the default prior for parameters between . . . . . . . .

A) 0 and 10 B) 1 and 2 C) 0 and 1 D) None of the mentioned

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Answer & Solution

Answer: Option C

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9

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

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Answer & Solution

Answer: Option D

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10

Point out the correct statement.

A) The mean is a measure of central tendency of the data B) Empirical mean is related to "centering" the random variables C) The empirical standard deviation is a measure of spread D) All of the mentioned

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Answer & Solution

Answer: Option D

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Data Science Miscellaneous MCQ Questions and Answers | Data Science MCQs