How do you rename a column named old_name to new_name in dplyr?
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R Programming · all questionsData Manipulation with dplyr
Data Manipulation with dplyr
practice.
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In dplyr, what is the purpose of the transmute() function?
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How do you calculate the percentage of total sales for each category in dplyr?
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What is the purpose of the pivot_longer() function in dplyr?
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How do you filter rows where a specific variable is not equal to a given value using filter() in dplyr?
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Which of the following is a plot to investigate the order in which observations were recorded?
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Which of the following creates fluctuation plot?
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How many functions exist for wrangling the data with dplyr package?
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The profiler can be turned off by passing . . . . . . . . to Rprof().
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Point out the wrong statement?
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which of the following functions can be used to finely control the appearance of all lattice plots ?
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. . . . . . . . function is used to simulate binary random variables.
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. . . . . . . . display contours of a 3d surface in 2d.
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. . . . . . . . modify a ggplot or theme object by adding on new components.
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How many functions exist for tidying the data?
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. . . . . . . . uses regex groups instead of a splitting pattern or position.
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. . . . . . . . generate aesthetic mappings that describe how variables in the data.
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If I want to save a plot to a PDF file, which of the following is a correct way of doing that?
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Which of the following is an example of a vector graphics device in R?
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You can time . . . . . . . . expressions by wrapping them in curly braces within the call to system.time().
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