R Programming · all questions

Data Manipulation with dplyr
practice.

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148

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Q121

Point out the correct statement?

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Q122

Which of the following code represents count with mean of 2?

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Q123

Which of the following create a set of identity mappings?

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Q124

Point out the correct statement?

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Q125

. . . . . . . . distribution is commonly used to model data that come in the form of counts.

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Q126

Which of the following is complementary to tidyr?

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Q127

Point out the correct statement?

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Q128

What will be the output of the following R code?

> x <- rnorm(10)
> x

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Q129

Logical flag is applicable to which of the following plots?

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Q130

What does the 'pch' option to par() control?

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Q131

Which of the following function works similar to separate()?

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Q132

Which of the following function takes multiple columns?

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Q133

The final bit of output that summaryRprof() provides is the . . . . . . . . interval and the total runtime.

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Q134

. . . . . . . . is interval represented by a vertical line, with a point in the middle.

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Q135

Which of the following statement gives sampling interval?

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Q136

Point out the wrong statement?

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Q137

Point out the wrong statement?

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Q138

. . . . . . . . modifies geom/stat aesthetic defaults for future plots.

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Q139

Which of the following merges two variables into one?

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Q140

Point out the correct statement?

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