Pr[H] = P
n tosses
$ P^{hat}_{ML} $ = # heads / n
say truth is P
E[ $ P^{hat}_{ML} $ ] = E[ #H ] / n = n*P / n = P -> unbiased
expectation of estimated value = true value
Pr[H] = P
n tosses
$ P^{hat}_{ML} $ = # heads / n
say truth is P
E[ $ P^{hat}_{ML} $ ] = E[ #H ] / n = n*P / n = P -> unbiased
expectation of estimated value = true value