Count Number of Rows by Group Using dplyr Package in R (Example) | group_by, summarise & n Functions

How to return the number of cases in each group of a data frame using the functions of the dplyr package in the R programming language. More details: https://statisticsglobe.com/count-num...
R code of this video:

data ＜- data.frame(x1 = 1:10, # Example data
x2 = letters[1:10],
group = c("A", "A", "A",
"B", "B", "B", "B",
"C", "C",
"D"))

install.packages("dplyr") # Install dplyr package
library("dplyr") # Load dplyr

data %＞% # Count rows by group
group_by(group) %＞%
summarise(n = n())

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