Average Calculator

Understanding Average & Descriptive Statistics

The mean is the arithmetic average (sum ÷ count). The median is the middle value once sorted—highly robust against outlier values. The modeis the most frequently occurring number. Standard deviation and variance measure dispersion. Population formulas assume the input set is the entire group, while sample formulas apply Bessel's correction (N - 1 denominator) for unbiased estimates of a larger population. The Box Plot visualizes the five-number summary: Min, Q1, Median, Q3, and Max. All calculations run locally in the browser.