Statistics Calculator
Calculate comprehensive statistics for a data set: mean, median, mode, range, variance, and standard deviation.
How to use this calculator
- 1Enter your values or expression in the fields above.
- 2Press Enter or click the calculate button.
- 3Read the result, then follow the numbered step-by-step working to understand each stage.
Worked Examples
Frequently Asked Questions
What is standard deviation?
Standard deviation measures how spread out the data is from the mean — a smaller value means data is closer to the mean.
Mean vs median?
Mean is the average (sum/count). Median is the middle value when data is sorted.
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Learn the concepts
Understand the theory behind this calculator.
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A probability distribution describes how probabilities are distributed over values of a random variable.
Probability
Probability measures how likely an event is to occur, ranging from 0 (impossible) to 1 (certain).
Regression
Regression analysis estimates relationships among variables, most commonly fitting a line to data.
Hypothesis Testing
Hypothesis testing uses sample data to evaluate claims about a population.