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Calculate relative sample variability as a percentage.
Calculate a pooled-standard-deviation standardized mean difference.
Calculate the probability of exactly k heads in n independent flips.
Calculate n choose k without order or repetition.
Calculate combinations using the stars-and-bars formula.
Calculate conditional probability from joint and condition probabilities.
Calculate a mean interval using an explicitly supplied critical value.
Calculate binary classification metrics from a confusion matrix.
Calculate k in y = kx.
Convert an integer value to its half-unit continuous interval.
Calculate Pearson correlation for paired observations.
Calculate sample covariance for paired observations.
Calculate an interpolated decile from a numeric sample.
Convert an implied probability to decimal odds.
Calculate one-sample degrees of freedom as n − 1.
Calculate the exact probability of a target sum.
Calculate expected value per die and for the total.
Calculate one-, two-, and three-standard-deviation bounds.
Calculate 5 number summary from explicit inputs using the documented formula.
Calculate 90 confidence interval from explicit inputs using the documented formula.
Calculate 95 confidence interval from explicit inputs using the documented formula.
Calculate 99 confidence interval from explicit inputs using the documented formula.
Calculate absolute uncertainty from explicit inputs using the documented formula.
Calculate accuracy from explicit inputs using the documented formula.
Calculate and probability from explicit inputs using the documented formula.
Calculate ascending order from explicit inputs using the documented formula.
Calculate bayes theorem from explicit inputs using the documented formula.
Calculate benfords law from explicit inputs using the documented formula.
Calculate beta distribution from explicit inputs using the documented formula.
Calculate binomial distribution from explicit inputs using the documented formula.
Calculate birthday paradox from explicit inputs using the documented formula.
Calculate bonferroni correction from explicit inputs using the documented formula.
Calculate central limit theorem from explicit inputs using the documented formula.
Calculate chebyshevs theorem from explicit inputs using the documented formula.
Calculate class width from explicit inputs using the documented formula.
Calculate coefficient of determination from explicit inputs using the documented formula.
Propagate independent first-order uncertainty for a product or quotient.
Calculate the expected value of a discrete probability distribution.
Calculate exponential distribution PDF, CDF, and mean.
Predict a value with continuous exponential growth.
Fit an exponential model to x,y observations.
Calculate the ratio of two variances.
Calculate positive predictive value from prevalence and test performance.
Illustrate the base-rate effect with population counts.
Calculate the 25th percentile of a data set.
Calculate a 2x2 table hypergeometric probability.
Calculate a weighted average from star-rating counts.
Convert fractional betting odds to decimal odds and probability.
Build an exact frequency table from observations.
Return coordinate pairs for a frequency polygon.
Calculate first-success probability and expected trials.
Sort numbers in descending order.
Calculate frequency-weighted grouped-data standard deviation.
Create deterministic equal-width histogram bins.
Calculate an exact finite-population probability.
Calculate a two-sided z statistic and p-value.
Convert decimal odds to implied probability.
Calculate IQV for nominal category counts.
Calculate a standard-normal quantile from a probability.
Calculate Q1, Q3, and interquartile range.
Calculate the joint probability of independent events.
Sort numbers in ascending order.
Sort decimal values in ascending order.
Fit an ordinary least-squares line to x,y observations.
Calculate lognormal PDF and CDF.
Calculate an n-choose-k lottery jackpot probability.
Calculate Tukey's 1.5-IQR lower outlier fence.
Calculate mean absolute deviation from the mean.
Calculate known-sigma z margin of error.
Calculate MCC from a binary confusion matrix.
Calculate mean, median, and mode from a numeric data set.
Find the median of a numeric data set.
Calculate median absolute deviation around the sample median.
Calculate the midpoint of a data set's minimum and maximum.
Find minimum, maximum, and range.
Find the most frequent value or values.
Convert American moneyline odds to implied probability.
Compare staying and switching probabilities.
Calculate MSE and RMSE for paired actual and predicted data.
Calculate the probability of failures before successes.
Approximate a binomial cumulative probability with continuity correction.
Calculate normal PDF and CDF values.
Calculate a cumulative probability for a sample mean.
Convert probability to odds and odds against.
Calculate OR probability for independent events.
Sort decimals from least to greatest.
Check a candidate against Tukey IQR fences.
Calculate a sample proportion from successes and trials.
Calculate possible strings from character-set size and length.
Calculate Pearson's r for paired data.
Calculate a percentile using linear interpolation.
Calculate the midrank percentile of a value.
Calculate ordered selections without repetition.
Calculate ordered selections with replacement.
Convert category values to percentages and sector angles.
Calculate a pie-chart sector angle.
Calculate a pie-chart sector percentage.
Calculate the exact probability of k events for a Poisson process with an explicit rate.
Calculate the joint probability of three independent events.
Calculate the minimum, maximum, and range of an explicit numeric data set.
Calculate base-2 Shannon entropy from category counts.
Calculate Simpson concentration and diversity from category counts.
Calculate tie-aware Spearman rank correlation for paired samples.
Create a deterministic stem-and-leaf display from numeric observations.
Calculate total and corrected sums of squares.
Calculate the linearly interpolated 75th percentile (Q3).
Calculate PDF, CDF, mean, and variance for a continuous uniform distribution.
Calculate Tukey's 1.5-IQR upper outlier fence.
Calculate both Tukey 1.5-IQR outlier fences.
Calculate Weibull PDF, CDF, and mean.
Calculate Youden's J from sensitivity and specificity.
Calculate a standard z score from a value, mean, and standard deviation.
Calculate standard error from sample standard deviation and sample size.
Calculate a one-sample t statistic from summary statistics.
Calculate signed and absolute relative error against a reference.
Calculate relative frequency from a category count and total.
Calculate population variance for an entered finite data set.
Calculate relative standard error from an entered standard error and estimate.
Calculate Cp, Cpu, Cpl, and Cpk from entered process limits and sigma.
Calculate equal-variance pooled standard deviation for two samples.
Calculate Rayleigh PDF, CDF, mean, and variance from an explicit scale.
Calculate observed minus predicted residual.
Calculate two-set Venn region counts from explicit integer cardinalities.
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.
Calculates the statistical bias of an estimator by comparing its expected value to the true population parameter.
Calculates basic statistics for categorical data: number of categories, total observations, and mode count.
Calculates the chi-square statistic for a contingency table or goodness-of-fit test based on observed and expected frequencies.
Calculates the coefficient of alienation (1 - r²) from a Pearson correlation coefficient, indicating the proportion of variance not shared between two variables.
Calculates the probability that an event does NOT occur, given the probability that it does occur.
Calculates the cumulative frequency for a given class in a frequency distribution, along with the total frequency and relative cumulative frequency.
Calculates the deviation score of a data point from the mean, showing how far and in which direction it lies.
Calculates the probability of a specific outcome or a range of outcomes for a discrete uniform distribution, where each outcome is equally likely.
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.