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## Pooled Variance Calculator

Instructions: This calculator computes the pooled variance and standard deviation for two given sample standard deviations \(s_1\) and \(s_2\), with corresponding sample sizes \(n_1\) and \(n_2\). Sample St. Dev. Sample 1 (\(s_1\)) = Sample Size 1 ...

## Effect Size Calculator – Cohen’s d

Instructions: This Statistics calculator will compute the Cohen's d for you. Please provide the information required below: Sample Mean (\(\bar X\)) Population Mean (\(\mu\)) Population St. Dev. (\(\sigma\)) More about Cohen's D Cohen's d ...

## Box Plot Maker

Instructions: The following graphical tool creates a box plot on the data you provide in the boxes. You can type one or more samples. Please press '\' to start a new sample. Type the samples (comma or space separated, press '\' for a new sample) ...

## Kruskal-Wallis Test Calculator

Instructions: This calculator conducts Kruskal-Wallis Test, which is non-parametric alternative to the One-Way ANOVA test, when the assumptions are not met for ANOVA. The purpose of the test is to assess whether or not the samples come from ...

## Critical T-values

Instructions: Compute critical t values for the t-distribution using the form below. Please type significance level \(\alpha\), number of degrees of freedom and indicate the type of tail (left-tailed, right-tailed, or two-tailed) Significance level ...

## Critical Chi-Square Values

Instructions: Compute critical Chi-Square values for the Chi-Square distribution using the form below. Please type the significance level \(\alpha\), the number of degree of freedom (df),and indicate the type of tail (left-tailed, right-tailed, or ...

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