R Programming MCQs - CSE MCQs Questions and Answers

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Which of the following truncates real x to integers ?

as.numeric(x)

as.integer(x)

as.order(x)

All of the mentioned

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Which of the following may be used for linear regression ?

X %*% Y

solve(A)

solve(A,B)

All of the mentioned

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________ provides needed string operators in R.

str

forecast

stringr

All of the mentioned

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________ contains tools for Approximate Bayesian Computation (ABC).

str

abc

zyz

All of the mentioned

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Which of the following package contains functions for reading and displaying satellite data for oceanographic applications with R ?

saves

satin

saws

All of the mentioned

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Which of the following involves predicting a categorical response ?

Regression

Summarization

Clustering

Classification

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Which of the following groups find the correlation matrix ?

factor.model

col.max(x)

stem

which.max(x)

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Which of the following is lattice command for producing boxplots ?

plot()

bwplot()

xyplot()

All of the mentioned