To create relative frequency tables in R, you can use two different ways **prop.table()** function and **dplyr** package.

The following methods show how you can do it with syntax.

**Method 1: Use prop.table() Function**

```
frequency_table <- table(data)
prop.table(frequency_table)
```

**Method 2: Use dplyr Package**

```
library(dplyr)
df %>%
group_by(data) %>%
summarise(count = n()) %>%
mutate(relative_frequency = count / sum(count))
```

The following examples show how to create relative frequency table in R.

## Using prop.table() Function

Let’s see how we can use **prop.table()** function to create relative frequency table in R:

```
# Create data frame
df <- data.frame(Machine_name=c("A","B","C","D","E","F","G","H","A","B","A","C","D","B","E","H"),
Pressure=c(12,11,12,13,13,9,12,12,9,8,7,8,12,11,9,8),
Status=c("OK","Suspect","OK","OK","Suspect","Suspect","Suspect","OK","OK","OK","OK","OK","Suspect","Suspect","Suspect","OK"))
# Calculate relative frequency
freq_table <- table(df$Status)
# Calculate relative frequency
prop.table(freq_table)
```

Output:

```
OK Suspect
0.5625 0.4375
```

Here the output shows relative table for **Status** column of data frame.

## Using dplyr Package

Let’s see how we can create relative frequency table using **dplyr** package in R:

```
library(dplyr)
# Create data frame
df <- data.frame(Machine_name=c("A","B","C","D","E","F","G","H","A","B","A","C","D","B","E","H"),
Pressure=c(12,11,12,13,13,9,12,12,9,8,7,8,12,11,9,8),
Status=c("OK","Suspect","OK","OK","Suspect","Suspect","Suspect","OK","OK","OK","OK","OK","Suspect","Suspect","Suspect","OK"))
# Calculate relative frequency
r <- df %>%
group_by(Machine_name) %>%
summarise(count = n()) %>%
mutate(relative_frequency = count / sum(count))
# Show print relative frequency
print(r)
```

Output:

```
Machine_name count relative_frequency
<chr> <int> <dbl>
1 A 3 0.188
2 B 3 0.188
3 C 2 0.125
4 D 2 0.125
5 E 2 0.125
6 F 1 0.0625
7 G 1 0.0625
8 H 2 0.125
```

Here the output shows relative frequncy table for **Machine_name** column of data frame.