addmargins Function in R (2 Examples) | Append Arbitrary Margins to Data | Mean to Contingency Table

R code of this video:

"B", "B", "C"),
x2 = letters[1:2])
data # Print example data frame

my_tab ＜- table(data) # Create contingency table
my_tab # Print contingency table

tab_sum ＜- addmargins(my_tab, FUN = sum) # Apply addmargins function
tab_sum # Table with sum margins

tab_mean ＜- addmargins(my_tab, FUN = mean) # Apply addmargins function
tab_mean # Table with mean margins

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[arash]

Hi,
What is the benefit of table over data frame?