In R, you can calculate the sum by group using the base aggregate(), dplyr's group_by() with summarise(), or the data…
Here are three ways to calculate the mean by group for single or multiple columns in the R data frame:…
To count the number of rows by group in R, you can either use the dplyr::count(), dplyr::group_by() with tally(), or…
The group_by() function from the dplyr package allows us to group data frames by one or more variables (columns), enabling…
The dplyr::slice() function subsets rows by their position or index within a data frame. If you want to select specific…
R vectors are atomic, meaning they contain homogeneous data types. They are contiguous in memory. Here are some of the…
Here are six ways to remove a single column from a data frame in R: By assigning NULL to a…
Dates in R are stored as the number of days since 1970-01-01, so converting a Date object to a Numeric…
In R, you can think of a vector as a series of values in a single column. It contains the…
The dplyr filter() function in R subsets a data frame and retains all rows that satisfy the conditions. In other…