📈 Statistics

📊 Mean, Median, Mode Calculator Find the mean, median, mode and range of a list of numbers. 📐 Standard Deviation Calculator Calculate sample or population standard deviation, variance and mean. ➗ Variance Calculator Compute the sample or population variance of a data set. 📏 Mean Absolute Deviation Calculator Find the mean absolute deviation (MAD) of a data set. 🎚️ Coefficient of Variation Calculator Measure relative variability as the ratio of standard deviation to mean. 🏅 Percentile Calculator Find the value at any percentile and the quartiles of a data set. 🔢 Z-Score Calculator Convert a raw value to a z-score and find its percentile. 🧪 P-Value Calculator (from Z) Convert a z-score to a one- or two-tailed p-value. 📶 Confidence Interval Calculator Build a confidence interval for a mean from the sample mean, SD and size. 🎯 Margin of Error Calculator Find the margin of error of a survey proportion. 👥 Sample Size Calculator Find the survey sample size for a target margin of error. 🎲 Probability Calculator Combine two independent event probabilities: and, or, neither. 🪙 Binomial Probability Calculator Find the probability of k successes in n independent trials. 🔔 Normal Distribution Calculator Find the probability density and cumulative probability for a normal value. 🔗 Correlation Coefficient Calculator Compute Pearson’s r between two lists of numbers.