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A two-parameter family of univariate distributions defined on the interval $[0,1]$.

5
votes
1answer
Suppose today I'm going to flip a coin. I believe that 9 of 10 flips will come up heads. I flip the coin and 8 of 10 are heads. Is my distribution of belief beta(9+8, 1+2) beta(1+9+8, 1+1+2) beta …
asked Jul 19 '13 by dfrankow
3
votes
Friend of mine answered this: I want the inverse cumulative distribution, i.e. the place on the X axis where the cumulative distribution is at 0.05. In SciPy, the easiest thing is btdtri. print btdt …
answered Jun 22 '13 by dfrankow
2
votes
1answer
Suppose I flip a coin 584,369 times and observe 5,257 heads and 579,112 tails. I wish to know the lower edge of the 90% credible interval for the probability that the next flip will come up heads. I …
asked Jun 22 '13 by dfrankow
38
votes
3answers
I am thinking of building a model predicting a ratio $a/b$, where $a \le b$ and $a > 0$ and $b > 0$. So, the ratio would be between $0$ and $1$. I could use linear regression, although it doesn't nat …
asked May 23 '12 by dfrankow