Statistics

Learn how a Probability Calculator works using key formulas like independent events and combinations, with clear examples and FAQs.

Use a Hypergeometric Calculator to compute exact probabilities without replacement. Find P(X=k) and cumulative odds for sampling from finite populations.

Use a Poisson Distribution Calculator to compute event probabilities for a given rate and time window, including P(X=k), P(X≤k), and P(X≥k).

Use a Binomial Distribution Calculator to find P(X = k) or cumulative probabilities with n trials and success rate p.

Use a Coin Flip Calculator to compute probabilities, expected counts, and run chances for heads/tails across any number of flips.

Use an Empirical Probability Calculator to estimate the chance of an event from real counts. Get probability, percent, and confidence notes.

Use the Empirical Rule Calculator to estimate what percent of data falls within 1, 2, or 3 standard deviations of the mean.

Use a Box Plot Calculator to compute the five-number summary, quartiles, and IQR from raw data. Includes outlier cutoffs.

Learn how to make a scatter plot that reveals relationships in your data. Use the Scatter Plot Maker calculator to compute points and best-fit lines.

Use the Residual Plot Calculator to compute residuals, standardized residuals, and key diagnostics to quickly spot nonlinearity and outliers.