T-Test Calculator
One-sample, two-sample, and paired t-tests for statistical analysis
Instructions
1.Select the appropriate test type
2.Enter sample data as comma-separated values
3.For one-sample test, enter population mean
4.Choose confidence level (90%, 95%, or 99%)
5.Click “Calculate T-Test” to get results
Test Types
One-Sample: Compare sample mean to known population mean
Two-Sample: Compare means of two independent groups
Paired: Compare before/after measurements