Statistics Calculators
📊Statistical analysis tools for data processing, averages, probability, and mathematical computations to interpret numbers with confidence.
Descriptive Statistics
Median Calculator
Calculate the median value from a dataset
Standard Deviation Calculator
Calculate standard deviation, variance, mean, and sum of squares for a data set.
Mean Calculator
Calculate the arithmetic mean (average) of a data set, plus sum and count.
Variance Calculator
Calculate population and sample variance of a data set, with mean and squared deviations.
Percentile Calculator
Find the value at any percentile in a data set, plus quartiles and rank.
Range Calculator
Find the range, minimum, and maximum of a data set from a list of numbers.
Interquartile Range (IQR) Calculator
Calculate the interquartile range (IQR) along with Q1, Q3, and the median of your data.
Coefficient of Variation Calculator
Compute the coefficient of variation (CV) as the ratio of standard deviation to the mean.
Mean Absolute Deviation Calculator
Calculate the mean absolute deviation (MAD) of a data set around its mean.
Geometric Mean Calculator
Find the geometric mean of a set of positive numbers, ideal for rates and ratios.
Harmonic Mean Calculator
Calculate the harmonic mean of a data set, useful for averaging rates and speeds.
Probability
Binomial Probability Calculator
Calculate binomial probabilities, cumulative distribution, and expected values for independent trials with fixed probability
Normal Distribution Calculator
Calculate probabilities and z-scores for a normal distribution.
Z-Score Calculator
Calculate the z-score (standard score) of a value given the mean and standard deviation.
Poisson Distribution Calculator
Compute Poisson probabilities for a given rate (lambda) and number of events.
Inferential Statistics
Regression Analysis
Linear Regression Calculator
Perform linear regression analysis with slope, intercept, R-squared, and prediction intervals for data sets
Correlation Coefficient Calculator
Calculate the Pearson correlation coefficient (r) between two variables.
Covariance Calculator
Calculate the population and sample covariance between two paired data sets.
Hypothesis Testing
Z-Test Calculator
Perform z-tests for population means and proportions with p-values, critical values, and hypothesis testing results
T-Test Calculator
Run a one-sample or two-sample t-test and get the t-statistic and p-value.
Chi-Square Calculator
Compute the chi-square statistic and p-value for goodness-of-fit or independence tests.
P-Value Calculator
Find the p-value from a z, t, or chi-square test statistic.