T-Distribution Calculator
Calculate probabilities for Student's t-distribution
Results:
t-Value: 2.0000
Degrees of Freedom: 10
PDF: 0.061146
P(T ≤ t): 90.7033%
P(T > t): 9.2967%
Two-Tailed p-value: 18.5934%
About T-Distribution
The t-distribution is used when the sample size is small and/or the population standard deviation is unknown.
Properties:
- Symmetric and bell-shaped like the normal distribution
- Has heavier tails than the normal distribution
- Approaches the normal distribution as df increases
Common uses: t-tests, confidence intervals for means