Calculate P Value From T By Hand

Introduction & Importance

Calculating the P-value from a T-statistic is a crucial step in statistical hypothesis testing. It helps determine the significance of your results and aids in decision-making…

How to Use This Calculator

1. Enter the T-statistic value.
2. Enter the degrees of freedom.
3. Click ‘Calculate’.

Formula & Methodology

The P-value is calculated using the T-distribution, which is defined by the T-statistic and degrees of freedom…

Real-World Examples

Example 1

Suppose you’ve calculated a T-statistic of 2.3 with 15 degrees of freedom…

Data & Statistics

T-Distribution Critical Values

Degrees of Freedom	Critical Value (α = 0.05, two-tailed)

Expert Tips

• Always use the correct degrees of freedom.
• Consider the direction of your alternative hypothesis.

Interactive FAQ

What is a T-statistic?

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For more information, see the T-Distribution Table from Statistics How To.