The **table()** function in R can be used to quickly create frequency tables.

This tutorial provides examples of how to use this function with the following data frame in R:

#create data frame df <- data.frame(player = c('AJ', 'Bob', 'Chad', 'Dan', 'Eric', 'Frank'), position = c('A', 'B', 'B', 'B', 'B', 'A'), points = c(1, 2, 2, 1, 0, 0)) #view data frame df player position points 1 AJ A 1 2 Bob B 2 3 Chad B 2 4 Dan B 1 5 Eric B 0 6 Frank A 0

**Example 1: Frequency Table for One Variable**

The following code shows how to create a frequency table for the **position** variable in our data frame:

#calculate frequency table forpositionvariable table(df$position) A B 2 4

From the output we can observe:

- 2 players in the data frame have a position of ‘
**A**‘ - 4 players in the data frame have a position of ‘
**B**‘

**Example 2: Frequency Table of Proportions for One Variable**

The following code shows how to use **prop.table()** to create a frequency table of proportions for the **position** variable in our data frame:

#calculate frequency table of proportions forpositionvariable prop.table(table(df$position)) A B 0.3333333 0.6666667

From the output we can observe:

- 33.33% of players in the data frame have a position of ‘
**A**‘ - 66.67% of players in the data frame have a position of ‘
**B**‘

Note that in a proportion table the sum of the proportions will always be equal to 1.

**Example 3: Frequency Table for Two Variables**

The following code shows how to create a frequency table for the **position** and **points **variable in our data frame:

#calculate frequency table forpositionandpointsvariable table(df$position, df$points) 0 1 2 A 1 1 0 B 1 1 2

From the output we can observe:

- 1 player in the data frame has a position of ‘
**A**‘ and**0**points - 1 player in the data frame has a position of ‘
**A**‘ and**1**point - 0 players in the data frame have a position of ‘
**A**‘ and**2**points - 1 player in the data frame has a position of ‘
**B**‘ and**0**points - 1 player in the data frame has a position of ‘
**B**‘ and**1**point - 2 players in the data frame have a position of ‘
**B**‘ and**2**points

**Example 4: Frequency Table of Proportions for Two Variables**

The following code shows how to create a frequency table of proportions for the **position** and **points **variable in our data frame:

#calculate frequency table of proportions forpositionandpointsvariable prop.table(table(df$position, df$points)) 0 1 2 A 0.1666667 0.1666667 0.0000000 B 0.1666667 0.1666667 0.3333333

From the output we can observe:

- 16.67% of players in the data frame have a position of ‘
**A**‘ and**0**points - 16.67% of players in the data frame have a position of ‘
**A**‘ and**1**point - 0% of players in the data frame have a position of ‘
**A**‘ and**2**points - 16.67% of players in the data frame have a position of ‘
**B**‘ and**0**points - 16.67% of players in the data frame have a position of ‘
**B**‘ and**1**point - 33.3% of players in the data frame have a position of ‘
**B**‘ and**2**points

Note that we can also use the **options()** function to specify how many decimals to show in the proportion table:

#only display two decimal places options(digits=2) #calculate frequency table of proportions forpositionandpointsvariable prop.table(table(df$position, df$points)) 0 1 2 A 0.17 0.17 0.00 B 0.17 0.17 0.33

**Additional Resources**

How to Create Relative Frequency Tables in R

How to Create a Relative Frequency Histogram in R

Bonjour,

J’ai un jeu de donnée avec pour chaque participant au court du temps la partie du test où ils en sont et leur regard à ce moment là. Je voudrais retrier les données pour obtenir pour chaque participant chaque position de jeu à chaque phase du test, comment faire ?

Merci

Can you add a title to the table?