Calculate T-Test Statistic by Hand
Introduction & Importance
Calculating the t-test statistic by hand is crucial for understanding and verifying statistical results…
How to Use This Calculator
- Enter the means, standard deviations, and sizes of the two samples.
- Click ‘Calculate’.
- View the results and chart below.
Formula & Methodology
The t-test statistic (t) is calculated using the formula:
t = (x̄₁ – x̄₂) / √[s₁²/n₁ + s₂²/n₂]
Real-World Examples
Data & Statistics
| Sample | Mean | Standard Deviation | Size |
|---|---|---|---|
| 1 | 50 | 5 | 20 |
| 2 | 55 | 6 | 30 |
Expert Tips
- Always check the assumptions of the t-test before using it.
- Consider using a different test if the data is not normally distributed.
Interactive FAQ
What is the t-test?
The t-test is a statistical test used to determine if there is a significant difference between the means of two groups.