Math & Numbers
Calculate Spearman rank correlation for paired numeric data with tied-rank handling
spearman-correlation-calculatorMath & Numbers
Calculate sample and population skewness to measure distribution asymmetry
skewness-calculatorMath & Numbers
Calculate a z-score from a raw value using a dataset or manually entered mean and standard deviation
z-score-calculatorMath & Numbers
Convert a z-score into normal-distribution percentile, tail probability, or central area
z-score-to-percentile-calculatorMath & Numbers
Calculate population standard deviation from population variance using the n denominator
population-standard-deviation-calculatorMath & Numbers
Calculate population variance with the n denominator for a complete numeric dataset
population-variance-calculatorMath & Numbers
Calculate sample standard deviation from sample variance using the n - 1 denominator
sample-standard-deviation-calculatorMath & Numbers
Calculate sample variance with the n - 1 denominator for estimating spread from a sample dataset
sample-variance-calculatorMath & Numbers
Calculate sample and population standard deviation, variance, coefficient of variation, and sigma intervals
standard-deviation-calculatorMath & Numbers
Find all real and complex roots of a polynomial from a coefficient list using a numerical root finder
polynomial-roots-calculatorMath & Numbers
Calculate arithmetic, geometric, and Fibonacci sequences, including the nth term, the first terms, and the partial sum
sequence-calculatorMath & Numbers
Break an integer into prime factors, show the factorization string, and optionally include divisor properties and factorization steps
prime-factorization-calculator