Statistics & Probability

Compute mean, median, mode, sample & population standard deviation, variance, range, and IQR from any dataset.

Calculate sample standard deviation, population standard deviation, variance, mean, and sum of squares.

Compute Q1, Median (Q2), Q3, Interquartile Range (IQR), percentiles, and Tukey outlier boundaries.

Convert standard normal Z-scores to cumulative probability CDF, one-tailed, and two-tailed p-values.

Calculate standard Z-scores, normal distribution CDF probabilities, and percentile ranks.

Compute exact and cumulative discrete probabilities for Binomial and Poisson distributions.

Determine statistically valid sample sizes and margins of error for surveys and A/B tests.

Analyze bivariate datasets to compute Pearson's r, sample covariance, R², and linear regression line.

Calculate posterior conditional probability P(A|B) using Bayes' Theorem.

Perform simple linear regression (y = mx + b) and calculate Pearson correlation coefficient (r) and R².

Convert between probability percentages, decimal odds, fractional odds, and American moneyline betting odds.

Compute one-sample Student's t-statistic, degrees of freedom, standard error, and hypothesis testing p-value bounds.