Calculate mean, median, mode, standard deviation and more
Built & maintained by Pappu Venkata Subbi Reddy, founder of Clacify
Clacify's Statistics Calculator computes all key descriptive statistics from a data set: mean (average), median (middle value), mode (most frequent), range, variance, standard deviation (population and sample), and sum. Enter your numbers separated by commas or spaces. Useful for students, data analysts, researchers, and anyone analysing numerical data without needing Excel or a graphing calculator.
Mean is the arithmetic average (sum ÷ count). Median is the middle value when sorted (or average of two middle values for even count). Mode is the value that appears most frequently. For normally distributed data, mean ≈ median ≈ mode. For skewed data (like income), median is a better "typical value" than mean because it is not distorted by extreme outliers.
Standard deviation measures how spread out values are from the mean. A low standard deviation means values cluster close to the mean; a high value means they are widely spread. Formula: σ = √[Σ(xi − μ)² ÷ N]. In a normal distribution, 68% of values fall within 1 standard deviation of the mean, and 95% within 2 standard deviations.