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 Utilities Statistical Tables Calculator Convert to Standard Scores Data Transformation Randomizer Estimation of a Sample’s Mean and Variance from Its Median and Range Note Pad Simple Graph Maker Pocket Calculator PDF & Excel Downloads
 Clinical Research Calculators Calculators 1-3. For prevalence, sensitivity, specificity, predictive values, likelihood ratios, etc. Kaplan-Meier Survival Probability Estimates Kappa as a Measure of Concordance in Categorical Sorting Chi-Square, Cramer's V, and Lambda for a Rows by Columns Contingency Table McNemar's Test for Correlated Proportions in the Marginals of a 2x2 Contingency Table Simple Logistic Regression [the plain-vanilla version] Simple ROC Curve Analysis Estimation of a Sample’s Mean and Variance from Its Median and Range
 Probabilities Randomness and the Appearence of Pattern [Demo] For Sequential Sampling: Pascal (Negative Binomial) Probabilities Backward Probability Template Bayes' Theorem: Conditional Probabilities Bayes' Theorem: Adjustment of Subjective Confidence [See also: Clinical Research Calculators.]
 Distributions Sampling Distribution Generators~ ~ Binomial Distributions ~ Poisson Distributions ~ Chi-Square Distributions ~ t-Distributions ~ Distributions of the Pearson Product-Moment Correlation Coefficient ~ Normal Distributions ~ Distributions of Sample Means ~ Distributions of Sample Mean Differences Central Limit Theorem [Text & Demo] z to P Calculator Standard Error of Sample Means Standard Error of the Difference Between the Means of Two Samples
 Procedures Applicable to Categorical Frequency Data Exact Binomial Probability Calculator Binomial z-Ratio Calculator Poisson Approximation of Binomial Probabilities Fitting an Observed Frequency Distribution to the Closest Poisson Distribution For Sequential Sampling: Pascal (Negative Binomial) Probabilities Chi-Square "Goodness of Fit" Test Kolmogorov-Smirnov One-Sample Test Fisher Exact Probability Test Phi Coefficient of Association Rates, Risk Ratio, Odds, Odds Ratio, Log Odds 2x2 Chi-Square McNemar's Test for Correlated Proportions in the Marginals of a 2x2 Contingency Table Fisher Exact Probability Test for Tables Larger than 2x2 Chi-Square, Cramer's V, and Lambda for a Rows by Columns Contingency Table Log-Linear Analysis for a 3-Way Contingency Table Kappa as a Measure of Concordance in Categorical Sorting
 Procedures Applicable to Proportions The Confidence Interval of a Proportion The Confidence Interval for the Difference Between Two Independent Proportions Significance of the Difference Between Two Independent Proportions McNemar's Test for Correlated Proportions in the Marginals of a 2x2 Contingency Table
 Procedures Applicable to Ordinal Data Rank-Order Correlation Mann-Whitney Test Wilcoxon Signed-Ranks Test Kruskal-Wallis Test Friedman Test
 Correlation & Regression Basic Linear Correlation & Regression Matrix of Intercorrelations Multiple Regression 0.95 and 0.99 Confidence Intervals for r Estimating the Population Value of rho on the Basis of Several Observed Sample Values of r Test for the Heterogeneity of Several Values of r The Significance of an Observed Value of r Significance of the Difference Between Two Independent Values of r Significance of the Difference Between an Observed Value of r and a Hypothetical Value of rho First- and Second-Order Partial Correlations Phi Coefficient of Association Point Biserial Coefficient Correlation for Unordered Pairs: Eta2, Intraclass Correlation, & Resampling of r Simple Logistic Regression
 t-Tests and Procedures t-Tests for the Significance of the Difference Between the Means of Two Samples (independent or correlated) Single Sample t-Test 0.95 Confidence Interval for the Estimated Mean of a Population
 Analysis of Variance One-Way ANOVA for Independent or Correlated Samples Two-Way Factorial ANOVA for Independent Samples Two-Factor ANOVA with Repeated Measures on One Factor Two-Factor ANOVA with Repeated Measures on Both Factors 2x2x2 ANOVA for Independent Samples Orthogonal Latin Square Designs for n=j2
 Analysis of Covariance One-Way ANCOVA for Independent Samples Two-Way Factorial ANCOVA for Independent Samples
 Miscellanea Basic Sample Stats Resampling Probability Estimates for the Difference Between the Means of Two Independent Samples The Power of the Chi-Square "Goodness of Fit" Test [Text & Demo]