statistics

Accuracy Calculator

Compute model accuracy precision recall and F1 from confusion matrix counts

Bayes Theorem Calculator

Calculate posterior probability after a positive test using Bayes theorem inputs

Birthday Paradox Calculator

Estimate probability that at least two people share a birthday in a group

Combination Calculator

Compute n choose r combinations quickly for probability and counting problems

Combination Without Repetition Calculator

Calculate combinations without repetition from a finite set

Possible Combinations Calculator

Find how many unique combinations are possible for your selection size

Permutation Calculator

Compute permutations without repetition where order matters

Permutation Without Repetition Calculator

Calculate ordered selections without reusing items

Permutation With Repetition Calculator

Calculate ordered arrangements with repetition allowed

Conditional Probability Calculator

Compute P(A given B) from intersection and condition probabilities

Joint Probability Calculator

Calculate probability of A and B occurring together under independence

AND Probability Calculator

Estimate and-probability for two independent events

OR Probability Calculator

Compute P(A or B) with overlap accounted for

Expected Value Calculator

Calculate expected value per trial and across repeated trials

Implied Probability Calculator

Convert decimal betting odds into implied probability percentage

Odds Calculator

Convert probability into decimal fractional and moneyline odds

Decimal Odds Calculator

Convert probability to decimal odds plus equivalent formats

Fractional Odds Calculator

Convert probability to fractional odds and compare moneyline and decimal

Moneyline Odds Calculator

Convert probability to American moneyline odds and equivalent formats

Random Number Generator Calculator

Generate random numbers in a custom range with count and precision controls

Decimal Random Number Generator Calculator

Generate decimal random numbers with custom precision and range

Relative Risk Calculator

Compare event risk between exposed and control groups

Risk Calculator

Calculate event risk probability and odds from count data

Sensitivity And Specificity Calculator

Compute diagnostic sensitivity specificity PPV and NPV from confusion matrix counts

Sensitivity Calculator

Compute sensitivity together with full diagnostic context metrics

Specificity Calculator

Compute specificity with PPV and NPV from confusion matrix counts

False Positive Calculator

Estimate false positive burden and posterior probability from test characteristics

Confidence Interval Calculator

Compute confidence interval around sample mean with selectable confidence level

90% Confidence Interval Calculator

Calculate a 90 percent confidence interval for a sample mean

95% Confidence Interval Calculator

Calculate a 95 percent confidence interval for a sample mean

99% Confidence Interval Calculator

Calculate a 99 percent confidence interval for a sample mean

Margin Of Error Calculator

Compute margin of error from sample variability and confidence level

Sample Size Calculator

Estimate required sample size from confidence margin and expected proportion

Z Score Calculator

Calculate z score and percentile for a value under normal assumptions

Z Test Calculator

Run one sample z test and report z statistic with two tailed p value

T Test Calculator

Run one sample t test and report t statistic with approximate p value

Binomial Distribution Calculator

Calculate exact cumulative and tail probabilities for binomial outcomes

Poisson Distribution Calculator

Compute Poisson probabilities for event count outcomes

Normal Distribution Calculator

Estimate normal distribution tail and cumulative probability at a given value

Hypergeometric Distribution Calculator

Compute draw without replacement hit probabilities using hypergeometric model

Geometric Distribution Calculator

Calculate first-success probabilities for geometric distribution

Lottery Calculator

Estimate lottery odds for matching a selected number count

Roulette Payout Calculator

Compute roulette gross return and net result by bet type and outcome

Dice Average Calculator

Calculate expected total minimum and maximum for any dice setup

Dice Roller Calculator

Roll virtual dice instantly and see throw by throw outcomes

Random Dice Roller Calculator

Generate random dice outcomes for tabletop and probability practice

Custom Dice Roller Calculator

Roll custom dice counts and side configurations instantly

D20 Dice Roller Calculator

Roll D20 dice with instant outcomes for tabletop games

D100 Dice Roller Calculator

Roll D100 virtual dice and view immediate random outcomes

2 Dice Roller Calculator

Roll two dice and view totals instantly

4 Sided Dice Roller Calculator

Roll 4 sided dice quickly for tabletop and probability practice

6 Sided Dice Roller Calculator

Roll classic six sided dice with immediate results

6 Sided Dice Probability Calculator

Estimate probability of target sum outcomes with six sided dice

Two Dice Probability Calculator

Calculate two dice sum probabilities and repeated session likelihood

Coin Flipper Calculator

Flip coins virtually and get a random heads tails sequence instantly

Probability Calculator

Compute basic event probability from favorable and total outcomes

Probability Of 3 Events Calculator

Compute joint probability for three independent events

Probability Fraction Calculator

Express probability as percentage and fraction from outcome counts

Anova Calculator

Calculate anova with clear formulas and decision-ready statistics outputs.

Chebyshev'S Theorem Calculator

Calculate chebyshev's theorem with clear formulas and decision-ready statistics outputs.

Coin Toss Streak Calculator

Calculate coin toss streak with clear formulas and decision-ready statistics outputs.

Confusion Matrix Calculator

Calculate confusion matrix with clear formulas and decision-ready statistics outputs.

Dice Probability Calculator

Calculate dice probability with clear formulas and decision-ready statistics outputs.

False Positive Paradox Calculator

Calculate false positive paradox with clear formulas and decision-ready statistics outputs.

Monty Hall Problem Calculator

Calculate monty hall problem with clear formulas and decision-ready statistics outputs.

Parrondo'S Paradox Calculator

Calculate parrondo's paradox with clear formulas and decision-ready statistics outputs.

Password Combination Calculator

Calculate password combination with clear formulas and decision-ready statistics outputs.

P-Hat Calculator

Calculate p-hat with clear formulas and decision-ready statistics outputs.

Post-Test Probability Calculator

Calculate post-test probability with clear formulas and decision-ready statistics outputs.

Quiz: Dice Average Calculator

Calculate quiz: dice average with clear formulas and decision-ready statistics outputs.

Quiz: Lottery Calculator

Calculate quiz: lottery with clear formulas and decision-ready statistics outputs.

Two Envelopes Paradox Calculator

Calculate two envelopes paradox with clear formulas and decision-ready statistics outputs.

Benford'S Law Calculator

Calculate benford's law with clear formulas and decision-ready statistics outputs.

Beta Distribution Calculator

Calculate beta distribution with clear formulas and decision-ready statistics outputs.

Box Plot Calculator

Calculate box plot with clear formulas and decision-ready statistics outputs.

Central Limit Theorem Calculator

Calculate central limit theorem with clear formulas and decision-ready statistics outputs.

Chi-Square Calculator

Calculate chi-square with clear formulas and decision-ready statistics outputs.

Class Width Calculator

Calculate class width with clear formulas and decision-ready statistics outputs.

Continuity Correction Calculator

Calculate continuity correction with clear formulas and decision-ready statistics outputs.

Dot Plot Calculator

Calculate dot plot with clear formulas and decision-ready statistics outputs.

Empirical Rule Calculator

Calculate empirical rule with clear formulas and decision-ready statistics outputs.

Exponential Distribution Calculator

Calculate exponential distribution with clear formulas and decision-ready statistics outputs.

Exponential Growth Prediction Calculator

Calculate exponential growth prediction with clear formulas and decision-ready statistics outputs.

Frequency Distribution Calculator

Calculate frequency distribution with clear formulas and decision-ready statistics outputs.

Frequency Polygon Calculator

Calculate frequency polygon with clear formulas and decision-ready statistics outputs.

Histogram Calculator

Calculate histogram with clear formulas and decision-ready statistics outputs.

Inverse Normal Distribution Calculator

Calculate inverse normal distribution with clear formulas and decision-ready statistics outputs.

Lognormal Distribution Calculator

Calculate lognormal distribution with clear formulas and decision-ready statistics outputs.

Negative Binomial Distribution Calculator

Calculate negative binomial distribution with clear formulas and decision-ready statistics outputs.

Normal Probability Calculator For Sampling Distributions

Calculate normal probability calculator for sampling distributions with clear formulas and decision-ready statistics outputs.

Pie Chart Calculator

Calculate pie chart with clear formulas and decision-ready statistics outputs.

Rayleigh Distribution Calculator

Calculate rayleigh distribution with clear formulas and decision-ready statistics outputs.

Relative Frequency Calculator

Calculate relative frequency with clear formulas and decision-ready statistics outputs.

Sampling Distribution Of The Sample Proportion Calculator

Calculate sampling distribution of the sample proportion with clear formulas and decision-ready statistics outputs.

Smp(X) Distribution Calculator

Calculate smp(x) distribution with clear formulas and decision-ready statistics outputs.

Stem And Leaf Plot Calculator

Calculate stem and leaf plot with clear formulas and decision-ready statistics outputs.

Uniform Distribution Calculator

Calculate uniform distribution with clear formulas and decision-ready statistics outputs.

Upper Control Limit Calculator

Calculate upper control limit with clear formulas and decision-ready statistics outputs.

Weibull Distribution Calculator

Calculate weibull distribution with clear formulas and decision-ready statistics outputs.

5 Number Summary Calculator

Calculate 5 number summary with clear formulas and decision-ready statistics outputs.

Average Rating Calculator

Calculate average rating with clear formulas and decision-ready statistics outputs.

Coefficient Of Variation Calculator

Calculate coefficient of variation with clear formulas and decision-ready statistics outputs.

Cohen'S D Calculator

Calculate cohen's d with clear formulas and decision-ready statistics outputs.

Constant Of Proportionality Calculator

Calculate constant of proportionality with clear formulas and decision-ready statistics outputs.

Correlation Coefficient Calculator

Calculate correlation coefficient with clear formulas and decision-ready statistics outputs.

Correlation Coefficient Calculator (Matthews)

Calculate correlation coefficient calculator (matthews) with clear formulas and decision-ready statistics outputs.

Covariance Calculator

Calculate covariance with clear formulas and decision-ready statistics outputs.

Decile Calculator

Calculate decile with clear formulas and decision-ready statistics outputs.

Descriptive Statistics Calculator

Calculate descriptive statistics with clear formulas and decision-ready statistics outputs.

Dispersion Calculator

Calculate dispersion with clear formulas and decision-ready statistics outputs.

Error Propagation Calculator

Calculate error propagation with clear formulas and decision-ready statistics outputs.

Grouped Data Standard Deviation Calculator

Calculate grouped data standard deviation with clear formulas and decision-ready statistics outputs.

Index Of Qualitative Variation Calculator

Calculate index of qualitative variation with clear formulas and decision-ready statistics outputs.

Iqr Calculator — Interquartile Range

Calculate iqr calculator — interquartile range with clear formulas and decision-ready statistics outputs.

Least To Greatest Calculator

Calculate least to greatest with clear formulas and decision-ready statistics outputs.

Mean Absolute Deviation Calculator

Calculate mean absolute deviation with clear formulas and decision-ready statistics outputs.

Mean Median Mode Calculator

Calculate mean median mode with clear formulas and decision-ready statistics outputs.

Median Calculator

Calculate median with clear formulas and decision-ready statistics outputs.

Median Absolute Deviation Calculator

Calculate median absolute deviation with clear formulas and decision-ready statistics outputs.

Midrange Calculator

Calculate midrange with clear formulas and decision-ready statistics outputs.

Minimum And Maximum Calculator

Calculate minimum and maximum with clear formulas and decision-ready statistics outputs.

Mode Calculator

Calculate mode with clear formulas and decision-ready statistics outputs.

Mse Calculator — Mean Squared Error

Calculate mse calculator — mean squared error with clear formulas and decision-ready statistics outputs.

Outlier Calculator

Calculate outlier with clear formulas and decision-ready statistics outputs.

Pearson Correlation Calculator

Calculate pearson correlation with clear formulas and decision-ready statistics outputs.

Percentile Calculator

Calculate percentile with clear formulas and decision-ready statistics outputs.

Percentile Rank Calculator

Calculate percentile rank with clear formulas and decision-ready statistics outputs.

Pooled Standard Deviation Calculator

Calculate pooled standard deviation with clear formulas and decision-ready statistics outputs.

Population Variance Calculator

Calculate population variance with clear formulas and decision-ready statistics outputs.

Process Capability Index Calculator

Calculate process capability index with clear formulas and decision-ready statistics outputs.

Quartile Calculator

Calculate quartile with clear formulas and decision-ready statistics outputs.

Quiz: Simpson’S Diversity Index Calculator

Calculate quiz: simpson’s diversity index with clear formulas and decision-ready statistics outputs.

Range Calculator

Calculate range with clear formulas and decision-ready statistics outputs.

Relative Standard Deviation Calculator

Calculate relative standard deviation with clear formulas and decision-ready statistics outputs.

Rse Calculator — Relative Standard Error

Calculate rse calculator — relative standard error with clear formulas and decision-ready statistics outputs.

Simpson’S Diversity Index Calculator

Calculate simpson’s diversity index with clear formulas and decision-ready statistics outputs.

Skewness Calculator

Calculate skewness with clear formulas and decision-ready statistics outputs.

Spearman'S Correlation Calculator

Calculate spearman's correlation with clear formulas and decision-ready statistics outputs.

Standard Deviation Calculator

Calculate standard deviation with clear formulas and decision-ready statistics outputs.

Standard Deviation Index Calculator

Calculate standard deviation index with clear formulas and decision-ready statistics outputs.

Standard Deviation Of Sample Mean Calculator

Calculate standard deviation of sample mean with clear formulas and decision-ready statistics outputs.

Standard Error Calculator

Calculate standard error with clear formulas and decision-ready statistics outputs.

Sum Of Squares Calculator

Calculate sum of squares with clear formulas and decision-ready statistics outputs.

Upper And Lower Fence Calculator

Calculate upper and lower fence with clear formulas and decision-ready statistics outputs.

Variance Calculator

Calculate variance with clear formulas and decision-ready statistics outputs.

Venn Diagram Calculator

Calculate venn diagram with clear formulas and decision-ready statistics outputs.

Absolute Uncertainty Calculator

Calculate absolute uncertainty with clear formulas and decision-ready statistics outputs.

Ab Test Calculator

Calculate ab test with clear formulas and decision-ready statistics outputs.

Bonferroni Correction Calculator

Calculate bonferroni correction with clear formulas and decision-ready statistics outputs.

Coefficient Of Determination Calculator (R-Squared)

Calculate coefficient of determination calculator (r-squared) with clear formulas and decision-ready statistics outputs.

Critical Value Calculator

Calculate critical value with clear formulas and decision-ready statistics outputs.

Cubic Regression Calculator

Calculate cubic regression with clear formulas and decision-ready statistics outputs.

Degrees Of Freedom Calculator

Calculate degrees of freedom with clear formulas and decision-ready statistics outputs.

Exponential Regression Calculator

Calculate exponential regression with clear formulas and decision-ready statistics outputs.

Fisher'S Exact Test Calculator

Calculate fisher's exact test with clear formulas and decision-ready statistics outputs.

F-Statistic Calculator

Calculate f-statistic with clear formulas and decision-ready statistics outputs.

Hypothesis Testing Calculator

Calculate hypothesis testing with clear formulas and decision-ready statistics outputs.

Linear Regression Calculator

Calculate linear regression with clear formulas and decision-ready statistics outputs.

Mcnemar'S Test Calculator

Calculate mcnemar's test with clear formulas and decision-ready statistics outputs.

Normal Approximation Calculator

Calculate normal approximation with clear formulas and decision-ready statistics outputs.

Point Estimate Calculator

Calculate point estimate with clear formulas and decision-ready statistics outputs.

Polynomial Regression Calculator

Calculate polynomial regression with clear formulas and decision-ready statistics outputs.

Power Analysis Calculator

Calculate power analysis with clear formulas and decision-ready statistics outputs.

P-Value Calculator

Calculate p-value with clear formulas and decision-ready statistics outputs.

Quadratic Regression Calculator

Calculate quadratic regression with clear formulas and decision-ready statistics outputs.

Raw Score Calculator

Calculate raw score with clear formulas and decision-ready statistics outputs.

Relative Error Calculator

Calculate relative error with clear formulas and decision-ready statistics outputs.

Residual Calculator

Calculate residual with clear formulas and decision-ready statistics outputs.

Sampling Error Calculator

Calculate sampling error with clear formulas and decision-ready statistics outputs.

T-Statistic Calculator

Calculate t-statistic with clear formulas and decision-ready statistics outputs.

Mann-Whitney U Test Calculator

Calculate mann-whitney u test with clear formulas and decision-ready statistics outputs.

Wilcoxon Rank-Sum Test Calculator

Calculate wilcoxon rank-sum test with clear formulas and decision-ready statistics outputs.

Youden Index Calculator

Calculate youden index with clear formulas and decision-ready statistics outputs.

Shannon Entropy Calculator

Calculate shannon entropy with clear formulas and decision-ready statistics outputs.

10 Sided Dice Roller Calculator

Calculate 10 sided dice roller with clear formulas and decision-ready statistics outputs.

Ascending Order Calculator

Calculate ascending order with clear formulas and decision-ready statistics outputs.

Combinations With Repetition Calculator

Calculate combinations with repetition with clear formulas and decision-ready statistics outputs.

Dnd Dice Roller Calculator

Calculate dnd dice roller with clear formulas and decision-ready statistics outputs.

First Quartile Calculator

Calculate first quartile with clear formulas and decision-ready statistics outputs.

Greatest To Least Calculator

Calculate greatest to least with clear formulas and decision-ready statistics outputs.

Least To Greatest Decimals Calculator

Calculate least to greatest decimals with clear formulas and decision-ready statistics outputs.

Lower Fence Calculator

Calculate lower fence with clear formulas and decision-ready statistics outputs.

Order From Least To Greatest Calculator

Calculate order from least to greatest with clear formulas and decision-ready statistics outputs.

Ordering Decimals Calculator

Calculate ordering decimals with clear formulas and decision-ready statistics outputs.

Ordering Numbers Calculator

Calculate ordering numbers with clear formulas and decision-ready statistics outputs.

Pie Chart Angle Calculator

Calculate pie chart angle with clear formulas and decision-ready statistics outputs.

Pie Chart Percentage Calculator

Calculate pie chart percentage with clear formulas and decision-ready statistics outputs.

Quartic Regression Calculator

Calculate quartic regression with clear formulas and decision-ready statistics outputs.

Third Quartile Calculator

Calculate third quartile with clear formulas and decision-ready statistics outputs.

Upper Fence Calculator

Calculate upper fence with clear formulas and decision-ready statistics outputs.