How to Make a Two-way Contingency Table in R (Example Code)

my_df <- data.frame(var_a = c("x", "y", "x", "z", "y", "y"),  # Construct data frame in R
                    var_b = c("a", "b"))
my_df                                                         # Display example data in RStudio console
#   var_a var_b
# 1     x     a
# 2     y     b
# 3     x     a
# 4     z     b
# 5     y     a
# 6     y     b

my_df <- data.frame(var_a = c("x", "y", "x", "z", "y", "y"), # Construct data frame in R var_b = c("a", "b")) my_df # Display example data in RStudio console # var_a var_b # 1 x a # 2 y b # 3 x a # 4 z b # 5 y a # 6 y b

table(my_df)                                                  # Create two-way contingency table
#      var_b
# var_a a b
#     x 2 0
#     y 1 2
#     z 0 1

table(my_df) # Create two-way contingency table # var_b # var_a a b # x 2 0 # y 1 2 # z 0 1