Here you'll find a set of statistics calculators that are intuitive and easy to use. Included are a variety of tests of significance, plus correlation, effect size and confidence interval calculators.

If you're not sure what statistics calculator you require, check out our Which Statistics Test? wizard.

*Significance Tests*

- One-Way ANOVA Calculator for Independent Measures

- One-Way ANOVA Calculator for Repeated Measures

- Binomial Test Calculator

- Chi-Square Calculator for 2 x 2 Contingency Table

- Chi-Square Calculator for 5 x 5 (or less) Contingency
Table

- Chi-Square Calculator for Goodness of Fit

- Fisher Exact Test Calculator for 2 x 2 Contingency Table

- The Friedman Test for Repeated Measures

- The Kolmogorov-Smirnov Test of Normality

- Kruskal-Wallis Test Calculator for Independent Measures

- Levene's Test of Homogeneity of Variance Calculator

- Mann-Whitney U Test Calculator

- Sign Test Calculator

- Standard Error Calculator

- T-Test Calculator for 2 Independent Means

- T-Test Calculator for 2 Dependent Means

- T-Test Calculator for a Single Sample

- Wilcoxon Signed-Rank Test Calculator

- Z Score Calculator for a Single Raw Value

- Z-Test Calculator for a Single Sample

- Z-Test Calculator for 2 Population Proportions

*Prediction*

*Tests of Correlation*

- Pearson Correlation Coefficient Calculator

- Phi Coefficient Calculator

- Point-Biserial Correlation Coefficient Calculator

- Spearman's Rho (Correlation) Calculator

*P Values*

- P-value from Z score.

- P-value from t score.

- P-value from chi-square score.

- P-value from
*F*-ratio score.

- P-value from Pearson (r) score.

- P-value from Tukey
*q*(studentized range distribution) score.

- Critical Values Calculator

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- Tukey Q calculator.

*Bayes Theorem*

*Effect Size*

*Confidence Intervals*

- A Single Sample Confidence Interval Calculator (T Statistic)

- A Single-Sample Confidence Interval Calculator (Z Statistic)

- An Independent Samples Confidence Interval Calculator

*Biostatistics*

*Utilities*

- A Baby Growth Percentile Calculator

- A Normal Distribution Generator

- A Rank Order Calculator

- Number Formatters and Transformers

- Number Formatter: European Format to North American Format

- Number Formatter: North American Format to European Format

Not sure which statistics test you should use? Check out our wizard!