# T-Test Calculator

> Calculate a one-sample or two-sample (Welch) independent t-test. Returns the t statistic, degrees of freedom, standard error, and mean difference.

**URL:** https://www.calculatoranswers.com/t-test-calculator
**Category:** Education

## Quick Answer

Perform hypothesis testing on your datasets. Enter your sample means, standard deviations, and sample sizes to compute t-values and p-values.

## Definition

A t-test calculator is a statistical utility used to determine if there is a significant difference between the means of two groups. It supports the one-sample t-test (comparing a sample mean to a known population mean), the independent two-sample t-test (comparing two unrelated groups), and the paired t-test (comparing related measurements from the same group). The calculator computes the t-value, degrees of freedom, and the p-value. Researchers use this tool to perform hypothesis testing and verify experimental findings.

## How to Use

1. **Choose t-test type** — Select between one-sample, independent two-sample, or paired t-tests.
2. **Enter your dataset statistics** — Type the mean, standard deviation, and sample size for each group.
3. **Choose tail options** — Select a one-tailed or two-tailed hypothesis test and set the significance level.
4. **View the results** — Read the calculated t-value, degrees of freedom, and p-value to determine statistical significance.

## Disclaimer

This calculator provides estimates for educational and planning purposes. Always consult a qualified professional for specific advice on financial, medical, legal, or other regulated decisions.

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