Statistics Calculators
Dive into data with our Statistics Calculators, which are essential for students, researchers, and data analysts. The Mean Calculator offers a quick way to calculate averages, while the Quartile Calculator provides insights into data distribution. Use our Variance Calculator for a deeper understanding of data variability or the GCF Calculator to determine the greatest common factor of a number set.
Average CalculatorFree average calculator: enter numbers to get the arithmetic mean instantly. Adds the values, counts them and divides, with the sum and steps shown.
Mean CalculatorFree mean calculator: find the arithmetic average of any data set. Enter values separated by commas or spaces for the mean, sum and count.
Mean, Median, Mode CalculatorFree mean, median, and mode calculator. Find all three measures of center plus the range for any data set, with the formulas and worked examples.
Odds CalculatorFree odds calculator. Convert between odds and probability, read American, decimal, and fractional betting odds, and find implied probability and payout.
Percentile CalculatorFree percentile calculator: find any percentile, the median, or the percentile rank of a value in your data set, with the steps shown.
Permutation CalculatorFree permutation calculator: find nPr with the formula nPr = n!/(n-r)!, plus worked examples and how permutations differ from combinations.
Quartile CalculatorFree quartile calculator: find Q1, Q2, Q3, and the IQR using the median-of-halves method, with worked examples for odd and even data sets.
Sample Size CalculatorFree sample size calculator for surveys and research. Enter confidence level, margin of error, and population size to get the responses you need.
Standard Deviation CalculatorFree standard deviation calculator for population or sample data. Shows the mean, variance, each step, and the bell-curve spread of your numbers.
Variance CalculatorFree variance calculator for population or sample data. Enter your numbers to get the mean, squared deviations, sum, and variance with every step.
Z-Score CalculatorFree z-score calculator using z = (x - mean) / SD. Enter a value, mean, and standard deviation to get the standard score and read it off a z-table.