Student's T-Table Calculator and Reference

Find critical t-values for statistical hypothesis testing with our interactive t-table calculator. Perfect for research, data analysis, and statistical inference.

T-Table Calculator

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Understanding the T-Table

What is a T-Table?

A t-table provides critical values for Student's t-distribution, essential for hypothesis testing when working with small sample sizes or unknown population standard deviations. It helps determine statistical significance in research and data analysis.

When to Use a T-Table

Use a t-table when: - Working with small sample sizes (n < 30) - The population standard deviation is unknown - Conducting hypothesis tests about population means - Calculating confidence intervals for means

How to Use This Calculator

1. Enter your degrees of freedom (df = sample size - 1) 2. Select your desired significance level (α) 3. Choose between one-tailed or two-tailed test 4. Click "Calculate" to get your critical t-value