Statistics & Probability Calculators

Calculate statistical values like mean, median, mode, standard deviation, and variance.

Easily calculate simple probabilities.

Calculate nPr and nCr

Calculate correlation coefficient and regression equation between two variables.

Perform statistical hypothesis testing with T-test and Z-test, calculate p-value and confidence interval.

Calculate Z-score, probability, percentile and normal distribution values.

Calculate required sample size for surveys and research studies.

Perform chi-square test of independence for categorical data analysis.