Statistics Calculator

Calculate mean, median, mode, standard deviation, and more from a dataset

Statistics Calculator

Data Set (comma-separated)*

Enter numbers separated by commas (e.g., 10, 20, 30, 40, 50)

How to Use

Enter your data as comma-separated numbers in the input field. Click Calculate to see the full set of descriptive statistics including mean, median, mode, standard deviation, variance, range, minimum, and maximum values.

Formula

\bar{x} = \frac{1}{n}\sum_{i=1}^{n} x_i \quad \sigma = \sqrt{\frac{1}{n}\sum_{i=1}^{n}(x_i - \bar{x})^2}

Examples

Test scores: 85, 90, 78, 92, 88

Mean = 86.6, Median = 88, Std Dev = 4.84. A fairly consistent set of scores.

Data with mode: 2, 4, 4, 4, 5, 5, 7, 9

Mean = 5, Median = 4.5, Mode = 4 (appears 3 times), Std Dev = 2.12.

Simple set: 100, 200, 300

Mean = 200, Median = 200, No mode, Std Dev = 81.65, Range = 200.

Frequently Asked Questions

What is the difference between mean and median?▾

The mean is the arithmetic average (sum divided by count). The median is the middle value when data is sorted. Median is less affected by outliers.

What is standard deviation?▾

Standard deviation measures how spread out the data is from the mean. A low standard deviation means data is clustered near the mean; a high one means it's more spread out.

When is there no mode?▾

A dataset has no mode when all values appear the same number of times (each value appears exactly once). If multiple values tie for most frequent, there are multiple modes.

Statistics Calculator

Calculate mean, median, mode, standard deviation, and more from a dataset