Lets say I have 2 lists and I would like to randomly select a winner between the lists but I would like to select the winner from list A 60% of the time and from list B 40% of the time, how can that be done in Google Sheets?

You can randomly select names from a list using this

CodePudding user response：

Without knowing some more information on your setup here is a general formula that does what you're describing:

=IF(RAND()<=0.6,INDEX(A2:A, RANDBETWEEN(1, COUNTA(A2:A))),INDEX(B2:B, RANDBETWEEN(1, COUNTA(B2:B))))

Essentially it is rolling a random number between 0 and 1. If it is equal to or less than .6 (simulating 60%, since there is a 60% chance it will be less than or equal to .6) it then selects a random name from Column A, otherwise (bottom 40%) it selects from column B.

You can also replace the "0.6" with A1 in my example to have the weight be a dynamic number. Changing A1 to 75% for example will then compare the random value against less than or equal to .75.

EDIT: Image shows the wrong condition, I was corrected in the sense you want less than or equal to .6 and not greater than, I had the weights flipped.