Statistics calculators
Mean, median, variance, weighted average, and z-score from lists you type.
6 tools
In this group
Open average for mean, sum, and range. Median and mode resist outliers. Standard deviation and variance are the same engine with different wording. z-score standardizes one value. Weighted rows are weighted average.
- Average Calculator Arithmetic mean, sum, count, min, max, and range of a list you type.
- Median and Mode Median and mode of a numeric list. Ties for mode are listed together.
- Standard Deviation Calculator Population and sample standard deviation and variance for a list you type.
- Variance Calculator Population and sample variance, with matching standard deviations.
- Weighted Average Weighted average from value-weight pairs. Weights must sum to more than 0.
- Z-Score Calculator z = (x − mean) / SD. Standard deviation cannot be 0.