Google Data Analytics Professional Certification Practice Test

Which package is used for importing data into R?

1. ggplot2

2. tidyr

3. readr

4. dplyr

The correct answer is: readr

The correct choice is the package that specifically focuses on importing data into R, which is readr. This package provides a set of functions designed to read data files of various formats, such as CSV, TSV, and others. It emphasizes speed and ease of use, making it a favored choice among R users for data importation tasks. readr's functions such as read_csv() and read_tsv() allow users to quickly load data into a data frame in R, facilitating a smoother workflow for data analysis. The package is part of the tidyverse, which means it integrates well with other R packages that are used for data manipulation and visualization. On the other hand, while ggplot2 is a powerful package for data visualization and plotting, it does not handle data import tasks. Tidyr is geared towards tidying data – making it organized and tidy for analysis – but does not focus on importing. dplyr is a package for data manipulation, allowing users to filter, summarize, and transform data sets, yet again, it does not serve the purpose of data importing. Thus, readr stands out as the dedicated package for the essential task of importing data into R.