Random generator using a range with range frequency
On Mon, 4 Aug 2008 12:30:14 -0700, Okstate_Fan131313
wrote:
I'm trying to find a way to randomly choose a number within a given range but
have a given frequency for each random number.
For example.
Range: 1-5
Frequency of appearance:
1=5%
2=10%
3=30%
4=50%
5=5%
I was trying to find a way using the random function with upper & lower
bounds but wasn't sure how in incorporate the "frequency of appearance"
factor.
Any and all help is greatly appreciated,
Thanks.
Try the following formula to get a random number from 1 to 5 with the
frequencies stated above:
=MAX((RAND(){0,0.05,0.15,0.45,0.95})*{1,2,3,4,5})
Note that the numbers in the first array are the cumulative
frequencies.
Hope this helps / Lars-Åke
|