Descriptive Statistics Calculator
Compute Mean, Median, Mode, Variance, Standard Deviation, Quartiles, IQR, Range, and Z-Scores from numerical datasets.
About This Tool
The Descriptive Statistics Calculator computes key summary statistics from arrays of numbers, providing central tendency, dispersion, quartiles, and outlier detection.
Key Features
How to Use
- 1Paste or type comma, space, or newline-separated numbers into the dataset field.
- 2Select Sample (n-1) or Population (n) variance calculation.
- 3Instantly view the statistical summary and metric breakdown.
Why Use ToolSnippet Descriptive Statistics Calculator?
Tips for Best Results
- Use Sample standard deviation (divided by n-1) when analyzing a subset or test sample of a larger population.
Frequently Asked Questions
When should I use Sample vs Population Standard Deviation?
Use Sample Standard Deviation (divided by n - 1, Bessel's correction) when your data is a sample of a larger group. Use Population (divided by n) when you have measured all members of the entire group.
What is the Interquartile Range (IQR)?
The Interquartile Range is the difference between the 75th percentile (Q3) and 25th percentile (Q1), measuring the spread of the middle 50% of your data.
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