Quartile Formula - Statistics
Learn the quartile formula with examples, step-by-step guide, and calculator tools. Divide a dataset into four equal parts
The quartile formula is a fundamental concept in statistics. Divide a dataset into four equal parts. This page provides a comprehensive guide with worked examples and practical applications.
The Formula
Variables
Step-by-Step Guide
- 1
Step 1: Gather your data values
- 2
Step 2: Apply the formula
- 3
Step 3: Perform the calculations
- 4
Step 4: Interpret the result
Examples
Example 1
Example 1: [2,5,8,10,12,15,18,20] → Q1 = value at position 2.25, Q2 = 11, Q3 = value at position 6.75
Example 2
Example 2: Q1=6.5, Q2=11, Q3=16.5
Frequently Asked Questions
What is the quartile formula?
Divide a dataset into four equal parts
How do I calculate quartile formula?
Use the formula: Q_i = \text{value at position } \frac{i(n+1)}{4}. Follow the steps provided above.
What tools can help with quartile formula?
We provide online calculators: quartile-calculator, percentile-calculator