Quartiles Calculator
Compute Q1, median, and Q3 of a dataset.
Amortization schedule
| # | Payment | Principal | Interest | Balance |
|---|---|---|---|---|
Showing first 12 of months.
Growth over time
| Year | Invested | Value |
|---|---|---|
Introduction
Quartiles Calculator — Compute Q1, median, and Q3 of a dataset. Enter Dataset (comma-separated) to get an instant, accurate result.
Formula
Q1, Q2 (median), and Q3 are the 25th, 50th, and 75th percentiles of the sorted data, found by linear interpolation.
Step-by-step
- Enter the Dataset (comma-separated).
- Click Calculate to see your result instantly.
Real-world example
Example: With Dataset (comma-separated) = 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, the Quartiles Calculator gives Q1: 3.25, Q2 Median: 5.5, Q3: 7.75.
Frequently Asked Questions
What do quartiles tell you?
They split the data into four equal-sized groups, showing how values are distributed across the low, middle, and high ranges.
Is Q2 the same as the median?
Yes, the second quartile is always equal to the median.
What inputs does the Quartiles Calculator need?
You'll need to provide: Dataset (comma-separated). All fields use sensible defaults, so you can see a working example immediately and then adjust the values to match your own numbers.
How accurate is the Quartiles Calculator?
The Quartiles Calculator applies the formula exactly as calculated — Q1, Q2 (median), and Q3 are the 25th, 50th, and 75th percentiles of the sorted data, found by linear interpolation. — so results are precise for the inputs you provide. Accuracy depends on entering correct, realistic input values.
Is the Quartiles Calculator free to use?
Yes, the Quartiles Calculator is completely free, requires no signup, and runs instantly in your browser.
About the Quartiles Calculator
The Quartiles Calculator uses a real, verifiable formula — Q1, Q2 (median), and Q3 are the 25th, 50th, and 75th percentiles of the sorted data, found by linear interpolation. — so results are accurate every time, not an approximation.