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== usage of ''people''==

Why assume that the people choosen are alive? If dead, then "they" aren't people, but corpses. The task clearly states a group of people. However, even if dead, they still had a birthday. -- [[User:Gerard Schildberger|Gerard Schildberger]] ([[User talk:Gerard Schildberger|talk]]) 03:02, 4 November 2013 (UTC)

== years in Algol ==

What does years signify in "%age of years with required common birthdays: 50.71%;" ? --[[User:Walterpachl|Walterpachl]] ([[User talk:Walterpachl|talk]]) 10:36, 4 November 2013 (UTC)

== Meaning of precision ==

I’m not sure what “''Estimating the error in the estimate to help ensure the estimate is accurate to 4 decimal places''” means. My interpretation is that the \sigma_\mathrm{mean} of the estimated frequency is <1/10000.

The \sigma_\mathrm{mean} of the distribution of each sample is calculated using the binomial distribution, so it’s is at most 1/2 (for p=q=1/2). We are very near that value. In this case, if we use \sigma_\mathrm{mean}=\sigma /Sqrt(N) then the number of samples has to be N=25000000=10000^2/4.

Most of the examples use N=50000, so they don’t have enough precision. On the other hand, 25000000 is to much, so I run my example in Racket with only 250000, that gives a \sigma of only 1/1000.

I think that the description of the task should ask for a clearer goal. For example: “''Do the final simulation with at least 25000000 samples to help ensure the estimate is accurate to 3 decimal places''.”