Get mean, median, mode, quartiles, five-number summary, IQR, range and standard deviation for a list of numbers. Enter your values; the result updates as you type, with the method shown below.
Formula
Mean = Σx / n Median = middle value Q1, Q3 = 25th and 75th percentiles
Worked example
For 3, 7, 8, 5, 12, 14, 21, 13, 18, 7: median 10, Q1 7, Q3 13.75.
Frequently asked questions
What is the five-number summary?
Minimum, first quartile, median, third quartile and maximum.
How are quartiles computed?
By linear interpolation between sorted values, as in most spreadsheets.
What if no value repeats?
There is no mode.
Related calculators
- Percentile Calculator
- Z-Score Calculator
- Percent Error Calculator
- Probability Calculator (Two Events)
- Odds to Probability Calculator
- Sample Size Calculator for Surveys
- All calculators in this category
Results are estimates for information only. Check important figures with a professional.