Statistics
Mean, median, mode, variance, standard deviation, and probability calculations.
Bayes' Theorem Calculator
Calculate conditional probability using Bayes' Theorem.
Binomial Probability Calculator
Calculate binomial probability for exactly k successes in n trials.
Chi-Square Test Calculator
Calculate chi-square statistic from observed and expected values.
Combination Calculator (nCr)
Calculate combinations - selections where order doesn't matter.
Confidence Interval Calculator
Calculate confidence interval for a population mean.
Correlation Calculator
Calculate Pearson correlation coefficient (r) and R².
Coefficient of Variation
Calculate CV to measure relative variability.
Factorial Calculator
Calculate n! (n factorial).
Mean Calculator
Calculate the arithmetic mean (average) of a set of numbers.
Median Calculator
Find the median (middle value) of a dataset.
Mode Calculator
Find the most frequently occurring value(s) in a dataset.
Permutation Calculator (nPr)
Calculate permutations - arrangements where order matters.
Basic Probability
Calculate probability as favorable outcomes / total outcomes.
Range & IQR Calculator
Calculate range, quartiles, and interquartile range.
Linear Regression Calculator
Calculate linear regression equation (y = a + bx).
Variance & Std Dev Calculator
Calculate variance and standard deviation of a dataset.
Weighted Mean Calculator
Calculate the weighted average of a dataset.
Z-Score Calculator
Calculate z-score (standard score) and percentile.