Statistics Calculators
Statistics calculators for mean, median, mode, standard deviation, probability, and more. Analyze data with confidence.
Mean Calculator
Compute arithmetic mean (average) from a set of numbers.
Median Calculator
Find the median (middle value) of a number set.
Mode Calculator
Identify the mode (most frequent value) in a data set.
Standard Deviation Calculator
Calculate standard deviation and variance for data sets.
Variance Calculator
Compute variance to measure data spread from the mean.
Probability Calculator
Compute probabilities for various statistical distributions.
Z-Score Calculator
Calculate z-scores for standardizing values in normal distributions.
P-Value Calculator
Calculate p-values for hypothesis testing and statistical significance.
Confidence Interval Calculator
Calculate confidence intervals for population parameters from sample data.
Sample Size Calculator
Determine required sample size for surveys and experiments.