Data science miscellaneous Archives

21. Point out the wrong statement.

The fraction of variance unexplained is an established concept in the context of linear regression

The general linear model extends simple linear regression (SLR) by adding terms linearly into the model

None of the mentioned

Detailed SolutionPoint out the wrong statement.

22. Which of the following attribute should be used while checking for type combination input and output?

.types

.type

.class

all of the mentioned

Detailed SolutionWhich of the following attribute should be used while checking for type combination input and output?

23. The least squares estimate for the coefficient of a multivariate regression model is exactly regression through the origin with the linear relationships.

TRUE

nan

Detailed SolutionThe least squares estimate for the coefficient of a multivariate regression model is exactly regression through the origin with the linear relationships.

24. In the context of natural language processing (NLP), what is the term for assigning parts of speech (e.g., noun, verb) to words in a text?

Text vectorization

Feature scaling

Part-of-speech tagging

One-hot encoding

Detailed SolutionIn the context of natural language processing (NLP), what is the term for assigning parts of speech (e.g., noun, verb) to words in a text?

25. Which of the following is example use of Poisson distribution?

Analyzing contingency table data

Modeling web traffic hits

Incidence rates

All of the mentioned

Detailed SolutionWhich of the following is example use of Poisson distribution?

26. Which of the following statement generates a html slide deck from index.Rmd?

all of the mentioned

Detailed SolutionWhich of the following statement generates a html slide deck from index.Rmd?

27. What is the main purpose of “time series decomposition” in time series analysis?

Separating a time series into its components, including trend, seasonality, and noise

Reducing the dimensionality of data

Creating a predictive model

Visualizing time series data

Detailed SolutionWhat is the main purpose of “time series decomposition” in time series analysis?

28. Which of the following clustering requires merging approach?

Partitional

Hierarchical

Naive Bayes

None of the mentioned

Detailed SolutionWhich of the following clustering requires merging approach?

29. The document produced by knitr document has which of the following extension?

.md

.rmd

.html

none of the mentioned

Detailed SolutionThe document produced by knitr document has which of the following extension?

30. Which of the following tool documentation language is supported by knitr?

RMarkdown

LaTeX

HTML

None of the mentioned

Detailed SolutionWhich of the following tool documentation language is supported by knitr?

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