sql - Normal distribution in oracle -
i generate normal distribution in pl/sql - oracle. know can generate kind of distribution via dbms_random specify paremeters of normal function (interval, mean, standard deviation).
is there easy way generate distribution or should code own function?
thanks
if want generate numbers arbitrary normal distribution, there 2 parameters make sense, mean , standard deviation. i'm not sure "interval" you'd want specify unless want produce truncated distribution.
given number standard normal distribution (mean 0, standard deviation 1 dbms_random.normal
returns), it's pretty trivial convert arbitrary normal distribution. multiply standard deviation want , add mean want. if want make distribution non-normal truncating particularly high or low values, can well.
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