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Qalc AI
Statistics Calculators
Advanced statistical analysis tools for data science, research, and probability.
Descriptive Statistics
Covariance Calculator
Dice Average Calculator
Harmonic Mean
Interquartile Range (IQR)
Logarithmic Mean
Mean Squared Error (MSE)
Mean, Median, & Mode
Median Absolute Deviation (MAD)
Midrange Calculator
Percentile Calculator
Pooled Standard Deviation
Quartiles Calculator
Range Calculator
Skewness Calculator
Standard Deviation
Variance Calculator
Weighted Mean
Other
5-Star / Wilson Score Calculator
A/B Test Calculator
Absolute vs Relative Uncertainty
Adjusted R-Squared
Bayes' Theorem
Benford's Law Auditor
Bonferroni Correction
Boy or Girl Paradox
Central Limit Theorem Demo
Chebyshev's Inequality
Class Width Calculator
Coefficient of Determination (R²)
Coefficient of Variation
Cohen's d (Effect Size)
Coin Flipper
Combinations & Permutations
Constant of Proportionality (k)
Critical Value Calculator
Decile Ranker
Dice Roller
Empirical Rule (68-95-99.7)
Error Function (erf)
Error Propagation Calculator
Expected Value E[X]
F-Test (Variance Ratio)
False Positive Paradox
Frequency Polygon & Distribution
Gini Inequality Index
Grouped Data Standard Deviation
Independent Samples T-Test
Index of Qualitative Variation (IQV)
Kolmogorov-Smirnov Test
Lottery Odds Calculator
Mann-Whitney U Test
Matthews Correlation (MCC)
McNemar's Change Test
Min Max Calculator
Moneyline Odds
One-Sample T-Test
One-Sample Z-Test
Ordering Numbers
Outlier Detector
P-Value Calculator (Normal)
Parrondo's Paradox
Point Estimate Calculator
Process Capability Index
Relative Error
Relative Frequency
Risk & Odds Analysis
Roulette Payout Calculator
Sample Proportion (p-hat)
Sampling Error (Margin of Error)
Sensitivity and Specificity
Shannon Entropy
Standard Error Calculator
Standard Error Calculator
Student's T-Table
Sum of Squares
Two Envelopes Paradox
Upper Control Limit (UCL) Calculator
Venn Diagram Probabilities
Youden's J Statistic Calculator
Z-Score Calculator
Z-Table (Standard Normal)
Paradoxes
Bertrand's Box Paradox
Bertrand's Paradox (Chord)
Birthday Paradox
Monty Hall Simulator
Simpson's Diversity Index
Probability & Distributions
Beta Distribution
Binomial Distribution
Chi-Square Goodness of Fit
Chi-Square Independence (2x2)
Exponential Distribution
Exponential Growth
Exponential Regression
Frequency Distribution Table
Geometric Distribution Calculator
Geometric Mean
Hypergeometric Distribution
Log-Normal Distribution
Negative Binomial Distribution
Normal Approximation to Binomial
Normal Distribution
Odds Converter
Poisson Distribution
Probability Calculator
Rayleigh Distribution
Three-Event Probability
Two Dice Probability
Uniform Distribution
Weibull Distribution
Regression & Correlation
Pearson Correlation (r)
Polynomial Regression
Residual Calculator
Simple Linear Regression
Spearman's Rank Correlation
Tests & Hypothesis
Confidence Interval
Fisher's Exact Test
One-Way ANOVA
Power Analysis Calculator
Sample Size Calculator
Visualization
Box Plot Calculator
Dot Plot Maker
Histogram Maker
Pie Chart Calculator
Stem and Leaf Plot
