Statistics Calculators
Use the Day 11 statistics set to summarize pasted datasets, compare sample and population spread, calculate percentile positions, and standardize values with z-scores.
Live today
4 calculators + 1 guide
Mean median mode, standard deviation, percentile, z-score, and the basic statistics guide are live with odd-count, even-count, and decimal dataset checks.
Day 11 statistics tools
Statistics Calculator
Mean Median Mode Calculator
Calculate mean, median, mode, range, sum, and sorted values from a pasted dataset with odd, even, and decimal checks.
OpenStatistics Calculator
Standard Deviation Calculator
Calculate sample and population standard deviation, variance, mean, and squared-deviation checks from pasted values.
OpenStatistics Calculator
Percentile Calculator
Calculate percentile values from a dataset using nearest-rank and interpolated methods with sorted-value checks.
OpenStatistics Calculator
Z Score Calculator
Calculate z-score, distance from mean, and approximate normal percentile from value, mean, and standard deviation.
OpenSupporting Guide
Basic Statistics Guide
Learn center, spread, percentile, and z-score formulas with method notes and source-backed references.
OpenHow the statistics calculators connect
Start with center
Mean, median, and mode describe typical values in different ways.
Measure spread
Variance and standard deviation show how far values sit from the mean.
Rank the dataset
Percentiles use sorted positions to describe where values sit in the distribution.
Standardize values
Z-scores convert raw distance from the mean into standard deviations.
Supporting Guide