What is the Student’s T-Test Calculator?

The Student’s T-Test Calculator helps determine whether a sample mean is significantly different from a known population mean when the population standard deviation is unknown, making it ideal for real-world situations where only sample data is available. By entering the sample mean, population mean, sample standard deviation, and sample size, the calculator computes the t-statistic, degrees of freedom, and p-value for two-tailed, left-tailed, or right-tailed tests, allowing users such as students, researchers, and analysts to quickly test hypotheses and understand whether their sample provides enough evidence to support or reject assumptions about the population.

How to Use:

1. Enter Sample Mean (x̄): Input the average of your sample.
2. Enter Population Mean (μ): Provide the claimed or comparison mean.
3. Enter Sample Standard Deviation (s): Type the sample SD (must be positive).
4. Enter Sample Size (n): Enter the number of observations (minimum 2).
5. Select Test Type: Choose two-tailed, left-tailed, or right-tailed.
6. Click Calculate: The tool instantly computes results.
7. Check Output: The result shows the t-value, degrees of freedom, and p-value for interpretation.