## Z-test for Two Proportions

Instructions: This calculator conducts a Z-test for two population proportions (p1 and p2), Please select the null and alternative hypotheses, type the significance level, the sample sizes, the number of favorable cases (or the sample proportions) ...

## F-test for the Equality of Two Population Variances

Instructions: This calculator conducts an F test for two population variances in order to assess whether two population variances $$\sigma_1^2$$ and $$\sigma_1^2$$ can be assumed to be equal or not. Please select the null and alternative hypotheses, ...

## Chi-Square test for One Pop. Variance

Instructions: This calculator conducts a Chi-Square test for one population variance ($$\sigma^2$$). Please select the null and alternative hypotheses, type the hypothesized variance, the significance level, the sample variance, and the sample size, ...

## Chi-Square Test for Goodness of Fit

Instructions: This calculator conducts a Chi-Square test for goodness of fit. Please enter the observed data, the hypothesized population proportions (expected proportions) and the significance level and the results of the Chi-Square test will be ...

## Chi-Square Test of Independence

Instructions: This calculator conducts a Chi-Square test of independence. Please first indicate the number of columns and rows for the cross tabulation. Then type the table data, the significance level, and optionally the name of rows and columns, ...

## Correlation Coefficient Significance

Instructions: Enter the sample correlation $$r$$, sample size $$n$$ and the significance level $$\alpha$$, and the solver will test whether or not the correlation coefficient is significantly different from zero using the critical correlation ...

## 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 ...

## One Way ANOVA Calculator

Instructions: This calculator conducts One-Way ANOVA for a group of samples, with the purpose of comparing the population means of several groups. Please type the sample data for the groups you want to compare and the significance level $$\alpha$$, ...

## Sign Test Calculator

Instructions: This calculator conducts a Sign Test. Please select the null and alternative hypotheses, enter the number of positives (+) and the number of negatives (-), along with the significance level, and the results of the sign test will be ...

## T-test for One Population Mean

Instructions: This calculator conducts a t-test for one population mean ($$\sigma$$), with unknown population standard deviation ($$\sigma$$), for which reason the sample standard deviation (s) is used instead. Please select the null and alternative ...

## T-test for Paired Samples

Instructions: This calculator conducts a t-test for two paired samples. This test applies when you have two samples that are dependent (paired or matched). Please select the null and alternative hypotheses, type the sample data and the significance ...

## T-test for two Means – Unknown Population Standard Deviations

Instructions: This calculator conducts a t-test for two population means ($$\mu_1$$ and $$\mu_2$$), with unknown population standard deviations. This test apply when you have two-independent samples, and the population standard deviations ...

## Wilcoxon Signed-Ranks Calculator

Instructions: This calculator conducts a Wilcoxon Signed-Ranks for two paired samples. This test applies when you have two samples that are dependent (paired or matched). Please select the null and alternative hypotheses, type the sample data and ...

## Z-test for One Population Mean

Instructions: This calculator conducts a Z-test for one population mean ($$\mu$$), with known population standard deviation ($$\sigma$$). Please select the null and alternative hypotheses, type the hypothesized mean, the significance level, the ...

## Z-test for two Means, with Known Population Standard Deviations

Instructions: This calculator conducts a Z-test for two population means ($$\mu_1$$ and $$\mu_2$$), with known population standard deviations ( $$\sigma_1$$ and $$\sigma_2$$). Please select the null and alternative hypotheses, type the significance ...

## Z-test: One Pop. Proportion

Instructions: This calculator conducts a Z-test for one population proportion (p). Please select the null and alternative hypotheses, type the hypothesized population proportion $$p_0$$, the significance level $$\alpha$$, the sample mean, the ...