Lower and Upper Quartiles Calculator
Introduction & Importance
Lower and upper quartiles are key measures in statistical analysis, helping to understand the spread of data. They divide a data set into four equal parts, providing insights into data distribution and identifying outliers.
How to Use This Calculator
- Enter comma-separated data in the input field.
- Click ‘Calculate’.
- View results and chart below.
Formula & Methodology
The quartiles are calculated by dividing the data set into four equal parts and finding the median of each part.
Real-World Examples
Data & Statistics
| Data Set | Lower Quartile | Upper Quartile |
|---|
Expert Tips
- Quartiles are not affected by outliers.
- They are useful for comparing data sets with different sizes.
Interactive FAQ
What are quartiles?
Quartiles are values that divide a data set into four equal parts.
Office for National Statistics – Official UK statistics.
Khan Academy – Learn about quartiles.