Two Sample t-test Calculator
The two sample t-test calculator determines whether there's a significant difference between two independent group means. Researchers use it in hypothesis testing to compare experimental groups, clinical trials, and business analytics. It helps validate if observed differences are statistically significant or due to random chance.
Calculator
Formula
t = (x̄₁ - x̄₂) / √(s²₁/n₁ + s²₂/n₂)
Where x̄ = mean, s² = variance, n = sample size
How to Use
Enter numeric values for both samples separated by commas. Click Calculate to get t-statistic, degrees of freedom, and p-value. Use clear button to reset. Ensure sufficient sample sizes (n ≥ 30) for accurate results. Interpret results: p-value < 0.05 suggests significant difference at 95% confidence level.
Development Process
1. Designed UI with HTML/CSS
2. Implemented input validation
3. Created statistical calculation logic
4. Added result display system
5. Tested with various datasets
6. Optimized for user experience