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Easy way to get a random sample of data in Excel 2007

Posted on 2011-03-25
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Last Modified: 2012-05-11
Hello:

I have a large data set in excel and I would like to know the quickest (and easiest) way to get a random sample of the data.

The data has several different usernames in a column called "Assigned to" and I need to get 10 random records from each user.  

Thank you in advance.

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Question by:MeowserM
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Accepted Solution

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leonstryker earned 2000 total points
ID: 35215661

Sort by usernames. Use the =RANDBETWEEN() function to generate a random number 10 times and pick those rows as your sample.
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Author Comment

by:MeowserM
ID: 35215746
Ok that sounds good.  Question for you:  How do I get the bottom and top numbers for each user?

I created a counter for each record within that users "group" of records.  But how do I get the MIN and MAX of that counter?

Thank you for you help
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Expert Comment

by:leonstryker
ID: 35215784
Once you sort your data, then MIN number will be the row where that user's data starts and the MAX number will be where that user's data stops.
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Author Comment

by:MeowserM
ID: 35215843
Yes and the MIN will always be 1 because that's where I start my counter.  But is there a formula or function I can use to determine the MAX?

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Assisted Solution

by:leonstryker
leonstryker earned 2000 total points
ID: 35215935
The MIN should not always be 1 if it is a sorted list. You can use =COUNTIF() funtion to find how many rows there are for each username, then the MAX will be equal to the MIN + COUNTIF(username)
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Author Comment

by:MeowserM
ID: 35216013
Very smart.  That's what I was looking for.

 Thank you I need some extra help today.

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Author Closing Comment

by:MeowserM
ID: 35216021
Thank you again.
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Expert Comment

by:leonstryker
ID: 35216037
Thanks for the grade.
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