Statistical Calculators

Calculate standard deviation and variance of your data set.

Calculate p-values for statistical hypothesis testing.

Calculate confidence intervals for population parameters.

Calculate chi-square statistics and test for independence.

Calculate the number of possible arrangements of items.

Calculate the number of possible combinations of items.

Calculate probabilities for normal distribution.

Calculate probabilities for binomial distribution.

Calculate z-scores and standardize data.

Calculate probabilities for dice rolls and combinations.

Calculate percentage error between measured and actual values.

Generate random numbers within specified ranges.

Calculate required sample size for statistical studies.

Calculate correlation between variables.

Calculate critical values for statistical tests.

Calculate variance of your data set.

Calculate covariance between two variables.

Calculate relative risk in epidemiological studies.

Calculate odds ratio for case-control studies.

Calculate hazard ratio for survival analysis.

Calculate error function values.

Convert z-scores to p-values.

Convert p-values to z-scores.

Convert chi-square values to p-values.

Calculate coefficient of variation for data sets.

Calculate conditional probabilities using Bayes' theorem.

Test for normal distribution of data.

Calculate sample ratio mismatch in experiments.

Calculate severity of statistical tests.