MATHEMATICS & STATISTICS
Statistics
Mean, Median, Mode Calculator
Calculate the mean, median and mode of a list of numbers, see the sorted data, and learn which average describes skewed data best.
Standard Deviation Calculator
Compute standard deviation and variance step by step, choose correctly between the sample and population formulas, and interpret the result against the data.
Z-Score Calculator
Calculate z-scores from value, mean, and standard deviation to compare observations across distributions.
Correlation Coefficient Calculator
Compute Pearson correlation coefficients to evaluate direction and strength of linear relationships.