Calculator category

Statistics Calculators

Calculate averages and standard deviation with formulas, examples, and sample versus population notes.

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Average CalculatorUse this average calculator to find the mean, sum, count, minimum, and maximum of a list of numbers.Standard Deviation CalculatorUse this standard deviation calculator to calculate population or sample standard deviation, variance, mean, and count.Confidence Interval CalculatorCalculate lower bound from sample mean and population standard deviation with this confidence interval calculator; review parsing, sample assumptions.Golf Handicap CalculatorCalculate estimated handicap index from score records with this golf handicap calculator; review parsing, sample assumptions, outliers, and related data.Mean Median Mode Range CalculatorCalculate mean from values with this mean median mode range calculator; review parsing, sample assumptions, outliers, and related data tools.Median CalculatorCalculate median from values with this median calculator; review parsing, sample assumptions, outliers, and related data tools.P-Value CalculatorCalculate p-value from sample mean and hypothesized mean with this P-value calculator; review parsing, sample assumptions, outliers, and related data.Permutation and Combination CalculatorCalculate count from total distinct items and items selected or positions with this permutation and combination calculator; review parsing, sample.

All available statistics calculators

Choose the calculator by the result you need first, then check the page assumptions and sources before reusing the answer.

Average CalculatorUse this average calculator to find the mean, sum, count, minimum, and maximum of a list of numbers.Average Standard Deviation CalculatorUse this standard deviation calculator to calculate population or sample standard deviation, variance, mean, and count.Standard deviation Confidence Interval CalculatorCalculate lower bound from sample mean and population standard deviation with this confidence interval calculator; review parsing, sample assumptions.Lower bound Golf Handicap CalculatorCalculate estimated handicap index from score records with this golf handicap calculator; review parsing, sample assumptions, outliers, and related data.Estimated Handicap Index Mean Median Mode Range CalculatorCalculate mean from values with this mean median mode range calculator; review parsing, sample assumptions, outliers, and related data tools.Mean Median CalculatorCalculate median from values with this median calculator; review parsing, sample assumptions, outliers, and related data tools.Median P-Value CalculatorCalculate p-value from sample mean and hypothesized mean with this P-value calculator; review parsing, sample assumptions, outliers, and related data.p-value Permutation and Combination CalculatorCalculate count from total distinct items and items selected or positions with this permutation and combination calculator; review parsing, sample.Count Probability CalculatorCalculate probability of A or B from probability of A and probability of B with this probability calculator; review parsing, sample assumptions, outliers.Probability of A or B Sample Size CalculatorCalculate required sample size from confidence level and margin of error with this sample size calculator; review parsing, sample assumptions, outliers.Required sample size Statistics CalculatorCalculate count from values and variance mode with this statistics calculator; review parsing, sample assumptions, outliers, and related data tools.Count Variance CalculatorCalculate variance from values and data type with this variance calculator; review parsing, sample assumptions, outliers, and related data tools.Variance Z-Score CalculatorCalculate Z-score from observed value and mean with this Z-score calculator; review parsing, sample assumptions, outliers, and related data tools.Z-score

How to choose

Use average when you need the arithmetic mean. Use standard deviation when you need to understand how spread out a set of values is.

Statistics Calculators FAQ

What is the difference between average and standard deviation?

Average gives the center of the values. Standard deviation describes how far values typically sit from that center.

Should I choose sample or population standard deviation?

Choose population when your list contains every value in the group. Choose sample when the values represent a subset of a larger group.