How to Find Quartiles in Excel?

You can find quartiles in Excel using the QUARTILE() function. This function helps you divide your dataset into four equal parts. Here’s how to use it:

Understanding Quartiles

Before diving into the how-to, let’s understand what quartiles represent:

• First Quartile (Q1): This is the value below which 25% of the data falls.
• Second Quartile (Q2): This is the median value; 50% of the data falls below it.
• Third Quartile (Q3): 75% of the data falls below this value.

Steps to Calculate Quartiles in Excel

Follow these simple steps to calculate the quartiles:

1. Data Input: Ensure your data is in a single column, for example, Column A.

2. Function Usage: In any blank cell, type the following formulas based on the quartile you want:

   • First Quartile (Q1): =QUARTILE(A:A,1)
   • Second Quartile (Q2): =QUARTILE(A:A,2)
   • Third Quartile (Q3): =QUARTILE(A:A,3)

3. Explanation:

   • A:A indicates the range of cells containing your dataset. Adjust this if your data is in a different column or range of cells.
   • The second argument, 1, 2, or 3, specifies which quartile you want to find (first, second, or third).

Practical Example

Let’s say your data (10, 20, 30, 40, 50, 60, 70, 80, 90, 100) is in cells A1 to A10.
Here's how you'd use the formulas:

Key Points

• The QUARTILE() function is simple and efficient for quartile calculations.
• Make sure you correctly specify the range where your data is located.
• Remember that you are using 1 for Q1, 2 for Q2 (the median), and 3 for Q3.

By using the QUARTILE() function in Excel as shown, you can easily calculate the quartiles of any dataset.