This question already has an answer here:
I wrote this short code
r = RandomReal[NormalDistribution[15, 1], 10000]; N[Mean[r], 3] 15.0012 N[StandardDeviation[r], 3] 1.00667 N[(StandardDeviation[r]/Sqrt), 3] 0.0100667
My problem is, the function
N is returning me the correct amount o significant digits i want.