133

Statistics & Probability

133 calculators

Statistics & Probability

Statistics & Probability calculators

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133 available

Coefficient of Variation Calculator

Calculate relative sample variability as a percentage.

Cohen's d Calculator

Calculate a pooled-standard-deviation standardized mean difference.

Coin Flip Probability Calculator

Calculate the probability of exactly k heads in n independent flips.

Combination Calculator

Calculate n choose k without order or repetition.

Combinations with Repetition Calculator

Calculate combinations using the stars-and-bars formula.

Conditional Probability Calculator

Calculate conditional probability from joint and condition probabilities.

Confidence Interval Calculator

Calculate a mean interval using an explicitly supplied critical value.

Confusion Matrix Calculator

Calculate binary classification metrics from a confusion matrix.

Constant of Proportionality Calculator

Calculate k in y = kx.

Continuity Correction Calculator

Convert an integer value to its half-unit continuous interval.

Correlation Calculator

Calculate Pearson correlation for paired observations.

Covariance Calculator

Calculate sample covariance for paired observations.

Decile Calculator

Calculate an interpolated decile from a numeric sample.

Decimal Odds Calculator

Convert an implied probability to decimal odds.

Degrees of Freedom Calculator

Calculate one-sample degrees of freedom as n − 1.

Dice Probability Calculator

Calculate the exact probability of a target sum.

Dice Average Calculator

Calculate expected value per die and for the total.

Empirical Rule Calculator

Calculate one-, two-, and three-standard-deviation bounds.

5 Number Summary Calculator

Calculate 5 number summary from explicit inputs using the documented formula.

90 Confidence Interval Calculator

Calculate 90 confidence interval from explicit inputs using the documented formula.

95 Confidence Interval Calculator

Calculate 95 confidence interval from explicit inputs using the documented formula.

99 Confidence Interval Calculator

Calculate 99 confidence interval from explicit inputs using the documented formula.

Absolute Uncertainty Calculator

Calculate absolute uncertainty from explicit inputs using the documented formula.

Accuracy Calculator

Calculate accuracy from explicit inputs using the documented formula.

And Probability Calculator

Calculate and probability from explicit inputs using the documented formula.

Ascending Order Calculator

Calculate ascending order from explicit inputs using the documented formula.

Bayes Theorem Calculator

Calculate bayes theorem from explicit inputs using the documented formula.

Benfords Law Calculator

Calculate benfords law from explicit inputs using the documented formula.

Beta Distribution Calculator

Calculate beta distribution from explicit inputs using the documented formula.

Binomial Distribution Calculator

Calculate binomial distribution from explicit inputs using the documented formula.

Birthday Paradox Calculator

Calculate birthday paradox from explicit inputs using the documented formula.

Bonferroni Correction Calculator

Calculate bonferroni correction from explicit inputs using the documented formula.

Central Limit Theorem Calculator

Calculate central limit theorem from explicit inputs using the documented formula.

Chebyshevs Theorem Calculator

Calculate chebyshevs theorem from explicit inputs using the documented formula.

Class Width Calculator

Calculate class width from explicit inputs using the documented formula.

Coefficient Of Determination Calculator

Calculate coefficient of determination from explicit inputs using the documented formula.

Error Propagation Calculator

Propagate independent first-order uncertainty for a product or quotient.

Expected Value Calculator

Calculate the expected value of a discrete probability distribution.

Exponential Distribution Calculator

Calculate exponential distribution PDF, CDF, and mean.

Exponential Growth Prediction Calculator

Predict a value with continuous exponential growth.

Exponential Regression Calculator

Fit an exponential model to x,y observations.

F-Statistic Calculator

Calculate the ratio of two variances.

False Positive Calculator

Calculate positive predictive value from prevalence and test performance.

False Positive Paradox Calculator

Illustrate the base-rate effect with population counts.

First Quartile Calculator

Calculate the 25th percentile of a data set.

Fisher's Exact Test Calculator

Calculate a 2x2 table hypergeometric probability.

Five-Star Rating Calculator

Calculate a weighted average from star-rating counts.

Fractional Odds Calculator

Convert fractional betting odds to decimal odds and probability.

Frequency Distribution Calculator

Build an exact frequency table from observations.

Frequency Polygon Calculator

Return coordinate pairs for a frequency polygon.

Geometric Distribution Calculator

Calculate first-success probability and expected trials.

Greatest to Least Calculator

Sort numbers in descending order.

Grouped Data Standard Deviation Calculator

Calculate frequency-weighted grouped-data standard deviation.

Histogram Calculator

Create deterministic equal-width histogram bins.

Hypergeometric Distribution Calculator

Calculate an exact finite-population probability.

Hypothesis Testing Calculator

Calculate a two-sided z statistic and p-value.

Implied Probability Calculator

Convert decimal odds to implied probability.

Index of Qualitative Variation Calculator

Calculate IQV for nominal category counts.

Inverse Normal Distribution Calculator

Calculate a standard-normal quantile from a probability.

IQR Calculator

Calculate Q1, Q3, and interquartile range.

Joint Probability Calculator

Calculate the joint probability of independent events.

Least to Greatest Calculator

Sort numbers in ascending order.

Least to Greatest Decimals Calculator

Sort decimal values in ascending order.

Linear Regression Calculator

Fit an ordinary least-squares line to x,y observations.

Lognormal Distribution Calculator

Calculate lognormal PDF and CDF.

Lottery Calculator

Calculate an n-choose-k lottery jackpot probability.

Lower Fence Calculator

Calculate Tukey's 1.5-IQR lower outlier fence.

Mean Absolute Deviation Calculator

Calculate mean absolute deviation from the mean.

Margin of Error Calculator

Calculate known-sigma z margin of error.

Matthews Correlation Coefficient Calculator

Calculate MCC from a binary confusion matrix.

Mean, Median & Mode Calculator

Calculate mean, median, and mode from a numeric data set.

Median Calculator

Find the median of a numeric data set.

Median Absolute Deviation Calculator

Calculate median absolute deviation around the sample median.

Midrange Calculator

Calculate the midpoint of a data set's minimum and maximum.

Minimum and Maximum Calculator

Find minimum, maximum, and range.

Mode Calculator

Find the most frequent value or values.

Moneyline Odds Calculator

Convert American moneyline odds to implied probability.

Monty Hall Problem Calculator

Compare staying and switching probabilities.

Mean Squared Error Calculator

Calculate MSE and RMSE for paired actual and predicted data.

Negative Binomial Distribution Calculator

Calculate the probability of failures before successes.

Normal Approximation Calculator

Approximate a binomial cumulative probability with continuity correction.

Normal Distribution Calculator

Calculate normal PDF and CDF values.

Normal Sampling Distribution Calculator

Calculate a cumulative probability for a sample mean.

Odds Calculator

Convert probability to odds and odds against.

OR Probability Calculator

Calculate OR probability for independent events.

Ordering Decimals Calculator

Sort decimals from least to greatest.

Outlier Calculator

Check a candidate against Tukey IQR fences.

p-hat Calculator

Calculate a sample proportion from successes and trials.

Password Combination Calculator

Calculate possible strings from character-set size and length.

Pearson Correlation Calculator

Calculate Pearson's r for paired data.

Percentile Calculator

Calculate a percentile using linear interpolation.

Percentile Rank Calculator

Calculate the midrank percentile of a value.

Permutation Calculator

Calculate ordered selections without repetition.

Permutation with Repetition Calculator

Calculate ordered selections with replacement.

Pie Chart Calculator

Convert category values to percentages and sector angles.

Pie Chart Angle Calculator

Calculate a pie-chart sector angle.

Pie Chart Percentage Calculator

Calculate a pie-chart sector percentage.

Poisson Distribution Calculator

Calculate the exact probability of k events for a Poisson process with an explicit rate.

Three-Event Probability Calculator

Calculate the joint probability of three independent events.

Range Calculator

Calculate the minimum, maximum, and range of an explicit numeric data set.

Shannon Entropy Calculator

Calculate base-2 Shannon entropy from category counts.

Simpson's Diversity Index Calculator

Calculate Simpson concentration and diversity from category counts.

Spearman's Rank Correlation Calculator

Calculate tie-aware Spearman rank correlation for paired samples.

Stem-and-Leaf Plot Calculator

Create a deterministic stem-and-leaf display from numeric observations.

Sum of Squares Calculator

Calculate total and corrected sums of squares.

Third Quartile Calculator

Calculate the linearly interpolated 75th percentile (Q3).

Uniform Distribution Calculator

Calculate PDF, CDF, mean, and variance for a continuous uniform distribution.

Upper Fence Calculator

Calculate Tukey's 1.5-IQR upper outlier fence.

Upper and Lower Fence Calculator

Calculate both Tukey 1.5-IQR outlier fences.

Weibull Distribution Calculator

Calculate Weibull PDF, CDF, and mean.

Youden Index Calculator

Calculate Youden's J from sensitivity and specificity.

Z-Score Calculator

Calculate a standard z score from a value, mean, and standard deviation.

Standard Error Calculator

Calculate standard error from sample standard deviation and sample size.

One-Sample t-Statistic Calculator

Calculate a one-sample t statistic from summary statistics.

Relative Error Calculator

Calculate signed and absolute relative error against a reference.

Relative Frequency Calculator

Calculate relative frequency from a category count and total.

Population Variance Calculator

Calculate population variance for an entered finite data set.

Relative Standard Error Calculator

Calculate relative standard error from an entered standard error and estimate.

Process Capability Index Calculator

Calculate Cp, Cpu, Cpl, and Cpk from entered process limits and sigma.

Pooled Standard Deviation Calculator

Calculate equal-variance pooled standard deviation for two samples.

Rayleigh Distribution Calculator

Calculate Rayleigh PDF, CDF, mean, and variance from an explicit scale.

Residual Calculator

Calculate observed minus predicted residual.

Two-Set Venn Diagram Calculator

Calculate two-set Venn region counts from explicit integer cardinalities.

Allan Variance Calculator

Estimates the Allan variance and deviation of a dataset from a single sample of phase or frequency measurements, given the sample size and measurement interval.

Bias Calculator

Calculates the statistical bias of an estimator by comparing its expected value to the true population parameter.

Categorical Data Calculator

Calculates basic statistics for categorical data: number of categories, total observations, and mode count.

Chi-Square Statistic Calculator

Calculates the chi-square statistic for a contingency table or goodness-of-fit test based on observed and expected frequencies.

Coefficient of Alienation Calculator

Calculates the coefficient of alienation (1 - r²) from a Pearson correlation coefficient, indicating the proportion of variance not shared between two variables.

Complementary Probability Calculator

Calculates the probability that an event does NOT occur, given the probability that it does occur.

Cumulative Frequency Calculator

Calculates the cumulative frequency for a given class in a frequency distribution, along with the total frequency and relative cumulative frequency.

Deviation Score Calculator

Calculates the deviation score of a data point from the mean, showing how far and in which direction it lies.

Discrete Uniform Distribution Calculator

Calculates the probability of a specific outcome or a range of outcomes for a discrete uniform distribution, where each outcome is equally likely.

Exponential Smoothing Calculator

Calculates the smoothed value for the next period using simple exponential smoothing, given the most recent actual value, the previous smoothed value, and a smoothing constant alpha.