To remove duplicate values from a data set using R, one must: 1) set the working directory where the data is located, 2) read in the data file, 3) view the original data, 4) use the unique() function to remove duplicate values, and 5) view the cleaned data without duplicates. This ensures the data only contains each unique value once by removing any redundant repeats.

1. Remove Duplicates from a list using R environment

2. Suppose we have data with multiple values and
we only want to keep the unique values from
that data like this :
Emna
Tom
Hans
Olivier
Tom
Ana
Simcic
Paul
Simcic
Emna
Emna
Tom
Hans
Olivier
Ana
Simcic
Paul
Data we have looks like this Data we need to look like :

3. R code for removing duplicates
1: set the working
directory where data
is present
2. Read data file
3. See your data
4. Remove duplicates
5. See your data
again