How To Calculate Percentages In R Studio Using Tally

R Programming

Calculating percentages in R Studio using Tally can be incredibly useful when analyzing data and performing statistical analysis. In this article, I will guide you through the process of calculating percentages using Tally in R Studio and provide some personal insights and commentary along the way.

Introduction to Tally

Before we dive into calculating percentages, let’s first understand what Tally is. Tally is a powerful package in R Studio that allows us to perform various operations on categorical variables, including calculating proportions and percentages.

Step 1: Installing and Loading the Tally Package

To get started, we need to install and load the Tally package in R Studio. We can do this by running the following code:


By executing these commands, we ensure that the Tally package is installed and loaded into our R Studio environment.

Step 2: Loading the Data

Once we have the Tally package installed and loaded, the next step is to load our data into R Studio. Suppose we have a dataset called “data.csv” that contains information about students and their test scores. We can load this dataset into R Studio using the following code:

data <- read.csv("data.csv")

Make sure to replace "data.csv" with the actual filename and path of your dataset.

Step 3: Calculating Percentages

Now that we have our data loaded, we can start calculating percentages using Tally. Let's say we want to calculate the percentage of students who scored above 90 on their test. We can do this by running the following code:

percentage_above_90 <- tally(data$score > 90) / nrow(data) * 100

In this code, we use the tally function to count the number of students who scored above 90 and divide it by the total number of students in the dataset. Multiplying the result by 100 gives us the percentage of students who scored above 90.

Personal Insights and Commentary

I find calculating percentages using Tally in R Studio to be incredibly efficient and straightforward. The Tally package provides a simple and concise syntax that makes it easy to perform calculations on categorical variables. Additionally, using R Studio allows for seamless integration with other statistical analyses and data visualization tools.

When working with percentages, it is essential to understand the context in which they are calculated. Make sure to consider the sample size and the specific criteria used to determine the percentage. Interpretation of percentages should always be done in conjunction with the underlying data and the research question at hand.


Calculating percentages in R Studio using Tally can greatly enhance your data analysis capabilities. By following the steps outlined in this article, you can easily calculate percentages and gain valuable insights from your data. Whether you're working on academic research, business analytics, or any other data-driven project, Tally in R Studio is a powerful tool to have in your toolkit.