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VassarStats: Website for Statistical Computation
A really useful site for your statistical needs :great: Great for students, but everyone can make use of it!
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
[TD="colspan: 2"]Utilities[/TD]
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
[TD="colspan: 2"]Clinical Research Calculators[/TD]
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.]
[TD="colspan: 2"]Probabilities[/TD]
~ 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
[TD="colspan: 3"]Distributions[/TD]
[TD="colspan: 2"]
Sampling Distribution Generators~
[/TD]
[TD="colspan: 2"]Central Limit Theorem [Text & Demo][/TD]
[TD="colspan: 2"]z to P Calculator[/TD]
[TD="colspan: 2"]Standard Error of Sample Means[/TD]
[TD="colspan: 2"]Standard Error of the Difference Between the Means of Two Samples[/TD]
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
[TD="colspan: 2"]Procedures Applicable to Categorical Frequency Data[/TD]
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
[TD="colspan: 2"]Procedures Applicable to Proportions[/TD]
Rank-Order Correlation Mann-Whitney Test Wilcoxon Signed-Ranks Test Kruskal-Wallis Test Friedman Test
[TD="colspan: 2"]Procedures Applicable to Ordinal Data[/TD]
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: Eta[SUP]2[/SUP], Intraclass Correlation, & Resampling of r Simple Logistic Regression
[TD="colspan: 2"]Correlation & Regression[/TD]
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
[TD="colspan: 2"]t-Tests and Procedures[/TD]
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=j[SUP]2[/SUP]
[TD="colspan: 2"]Analysis of Variance[/TD]
One-Way ANCOVA for Independent Samples Two-Way Factorial ANCOVA for Independent Samples
[TD="colspan: 2"]Analysis of Covariance[/TD]
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]
[TD="colspan: 2"]Miscellanea[/TD]
