Explanation:One important contribution of the dplyr package is that it provides a “grammar” for data manipulation and for operating on data frames. 2. Point out the correct statement :
A. The data frame is a key data structure in statistics and in R
B. R has an internal implementation of data frames that is likely the one you will use most often
C. There are packages on CRAN that implement data frames via things like relational databases that allow you to operate on very very large data frames
D. All of the mentioned
Answer:A
Explanation:One important contribution of the dplyr package is that it provides a “grammar” for data manipulation and for operating on data frames. 2. Point out the correct statement :
A. The data frame is a key data structure in statistics and in R B. R has an internal implementation of data frames that is likely the one you will use most often C. There are packages on CRAN that implement data frames via things like relational databases that allow you to operate on very very large data frames D. All of the mentioned
Explanation:The basic structure of a data frame is that there is one observation per row and each column represents a variable, a measure, feature, or characteristic of that observation. 3. _________ extract a subset of rows from a data frame based on logical conditions.