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If I get $s$ successes out of $n$ trials in a binomial distribution, what is the probability $p$ of getting a success in each individual trial?

Presumably $p = s/n$, but what if $s = 0$ or $s = n$? Would the probability $p$ really be $0$ or $1$?

That seems far too certain if the sample size $n$ is very small, so is there some correction factor to account for small sample sizes in estimating $p$?

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  • $\begingroup$ It depends. What is your loss function, prior distribution, or preferred estimation method? $\endgroup$
    – whuber ♦
    Nov 29, 2018 at 0:05
  • $\begingroup$ Uniform prior distribution in $p$ $\endgroup$
    – Kelvin
    Nov 29, 2018 at 0:09

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