The t Distribution
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The t distribution is a bell-shaped distribution centered at the value 0. For large degrees of freedom, it looks very similar to the standard normal distribution, but for small degrees of freedom, it has wider tails.
Explore the shape of the t distribution by changing the degrees of freedom. Check the box to see how it compares to the standard normal distribution.
Degrees of Freedom:
Show Standard Normal Curve
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Degrees of Freedom:
Show Standard Normal Curve
Select Type of Probability:
Lower Tail: P(X < x)
Upper Tail: P(X > x)
Two-Tailed: P(|X| > x)
Interval: P(a < X < b)
Specify x:
Value of a:
Value of b:
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Degrees of Freedom:
Show Standard Normal Curve
Select Type of Percentile:
Lower Tail
Upper Tail
Two-Tailed
Probability in lower tail (in %):
Probability in upper tail (in %):
Central Probability (in %):
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