Statistics Calculator

Calculate mean, median, mode, standard deviation, range, and more from any data set. Enter numbers separated by commas or spaces.

Statistical Measures Explained

Mean (Average)

The mean is the sum of all values divided by the count. It represents the central tendency of a data set. Formula: μ = Σx / n

Median

The middle value when data is sorted. For even-count sets, it’s the average of the two middle values. The median is resistant to outliers.

Mode

The value(s) that appear most frequently. A data set can have no mode, one mode, or multiple modes.

Standard Deviation

Measures how spread out values are from the mean. A low standard deviation means values are clustered closely; high means they’re spread out. Population std dev is used when you have all data; sample std dev when your data is a sample from a larger set.