Welch's t-test: Difference between revisions
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<math> p_{2-tail} = I_{\frac{\nu}{t^2+\nu}}\left(\frac{\nu}{2}, \frac{1}{2}\right) </math> |
<math> p_{2-tail} = I_{\frac{\nu}{t^2+\nu}}\left(\frac{\nu}{2}, \frac{1}{2}\right) </math> |
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where I is the [[wp:Beta_function#Incomplete_beta_function|incomplete beta function]]. This is the same as: |
where I is the [[wp:Beta_function#Incomplete_beta_function|regularized incomplete beta function]]. This is the same as: |
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<math>p_{2-tail} = \frac{\Beta(\frac{\nu}{t^2+\nu};\frac{\nu}{2}, \frac{1}{2})}{\Beta(\frac{\nu}{2}, \frac{1}{2})} </math> |
<math>p_{2-tail} = \frac{\Beta(\frac{\nu}{t^2+\nu};\frac{\nu}{2}, \frac{1}{2})}{\Beta(\frac{\nu}{2}, \frac{1}{2})} </math> |
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