4 calculators in this category
- One-Sample T-Test CalculatorStudent's t-testA one-sample t-test asks whether the mean of your sample is far enough from a reference value that chance alone is an…
- Two-Sample (Independent) T-Test CalculatorWelch and pooled Student t-testsThis calculator compares the means of two independent groups. Enter each group's mean, standard deviation and sample size…
- P-Value Calculator from a Test StatisticExact distribution tail areasYou have a test statistic and you need its p-value. Choose the distribution — standard normal, Student t , chi-square or F —…
- One-Way ANOVA CalculatorFisher's analysis of varianceOne-way ANOVA tests whether several group means could all have come from the same population. Paste each group's raw values…
Which one do you need?
- One-Sample T-Test Calculator
- Test whether a sample mean differs from a hypothesised value. Returns the t statistic, degrees of freedom, exact p-value, critical value and confidence interval.
- Two-Sample (Independent) T-Test Calculator
- Compare two independent group means with a Welch or pooled t-test. Returns t, degrees of freedom, p-value, the confidence interval for the difference and Cohen's d.
- P-Value Calculator from a Test Statistic
- Convert a z, t, chi-square or F test statistic into an exact one- or two-tailed p-value, with the critical value and a significance verdict at your chosen alpha.
- One-Way ANOVA Calculator
- Compare three or more group means with a one-way analysis of variance. Prints the full ANOVA table, F statistic, exact p-value, critical F and eta-squared effect size.