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Excel 2007 : Random number generator without repeats

  1. #1
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    Question Random number generator without repeats

    I am currently using this formula for random drug screening; however, it often repeats a number. For simplicity here, lets say I have 10 names in a column on the left with a header row.
    I would use:
    =RAND()*(11-1)+1 where 11 is the last row number with a name populated. I would then have the spreadsheet set up this way:
    Column 1 numbers 1 through however many employees I have; Column 2 employee names; column 3 formula in cell C1. I would drag C1's formula through how ever many rows I want employees selected for. If I want 50% chosen randomly to test I drag through 5 rows. It generates 5 numbers I match to the name next to that number generated. EXCEPT: it will repeat numbers already selected. How do I make it not repeat an already chosen number?
    Thanks,
    Jim, HR Director

  2. #2
    Forum Guru shg's Avatar
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    Re: Random number generator without repeats

    In an convenient column, =RAND()

    Then sort by that column and pick the top N names from the list.
    Entia non sunt multiplicanda sine necessitate

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    Re: Random number generator without repeats

    Quote Originally Posted by shg View Post
    In an convenient column, =RAND()

    Then sort by that column and pick the top N names from the list.
    I tried that and it did not work for me. Hmmm, I must be missing something. It only gave me zeros and ones. Machine language, LOL

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    Re: Random number generator without repeats


  5. #5
    Forum Guru shg's Avatar
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    Re: Random number generator without repeats

    It only gave me zeros and ones.
    Format as General to see all the decimals, though it will not affect the result of the sorting

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