Range Calculator
Enter a list of numbers separated by commas or spaces and instantly find the range (maximum minus minimum), along with the minimum, maximum, count, and sorted data.
Measures of Spread Compared
| Measure | Formula | Outlier Sensitive? | Best For |
|---|---|---|---|
| Range | Max − Min | Yes | Quick overview |
| IQR | Q3 − Q1 | No | Skewed data |
| Std Dev | √(Variance) | Moderately | Normal data |
| Variance | Σ(x−μ)²/n | Moderately | Statistical tests |
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- Five Number Summary Calculator — Min, Q1, Median, Q3, Max with box plot
- Standard Deviation Calculator
- Variance Calculator
- Mean / Average Calculator
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Frequently Asked Questions
What is range in statistics?
Range is the difference between the largest and smallest values in a data set. It is the simplest measure of dispersion (spread). Formula: Range = Maximum − Minimum.
How to calculate range?
1) Find the maximum value. 2) Find the minimum value. 3) Subtract: Range = Max − Min. Example: for {3, 7, 2, 9, 5}, Max = 9, Min = 2, Range = 9 − 2 = 7.
Is range affected by outliers?
Yes, range is very sensitive to outliers because it only uses the two extreme values. A single outlier can dramatically increase the range. For more robust measures, use IQR or standard deviation.
Range vs IQR?
Range = Max − Min (uses extremes, affected by outliers). IQR = Q3 − Q1 (middle 50%, resistant to outliers). Use IQR when outliers are present; use range for a quick overview.
Range is the simplest measure of spread but is sensitive to extreme values. Consider IQR or standard deviation for more robust analysis.
