Statistics Calculators
Analyze data with probability, distributions, and hypothesis testing.
23 calculators available
Descriptive Statistics
Mean, Median & Mode Calculator
Calculate central tendency measures from a data set.
Percentile Calculator
Calculate the percentile rank of a value in a data set.
Quartile Calculator
Calculate Q1, Q2 (median), Q3, and IQR for a dataset.
Range Calculator
Calculate the range, midrange, and data spread of a dataset.
Standard Deviation Calculator
Find the standard deviation and variance of a data set.
Statistics Calculator
Compute mean, median, mode, range, variance, and standard deviation for any data set.
Variance Calculator
Calculate variance and standard deviation for a data set.
Z-Score Calculator
Calculate z-scores from value, mean, and standard deviation.
General
Hypothesis Testing
Probability
Bayes Theorem Calculator
Calculate posterior probability using Bayes
Binomial Probability Calculator
Calculate binomial distribution probabilities.
Normal Distribution Calculator
Calculate probabilities for normal (Gaussian) distribution.
Poisson Distribution Calculator
Calculate probabilities for Poisson-distributed events.
Probability Calculator
Calculate the probability of single and combined events.
Regression
Correlation Coefficient Calculator
Calculate Pearson correlation coefficient between two variables.
Linear Regression Calculator
Calculate the line of best fit (y = mx + b) for data points.
R-Squared Calculator
Calculate the coefficient of determination (R²) for model fit.
Sampling
About Statistics Calculators
Analyze data with probability, distributions, and hypothesis testing. CALTRX provides 23 free statistics calculators with step-by-step explanations, formulas, real-world examples, and expert tips. Every calculator is designed for clarity and accuracy, helping you understand not just the answer but the reasoning behind it.