RANDBETWEEN
Hi All,
If I use RANDBETWEEN function to generate random samples, how do I make sure that units are not repeate? For example- I have 1000 units and I have to generate 30 samples. I will use RANDBETWEEN(1,30) in 30 cells. How do I make sure that the numbers are not repeated and all the samples are unique? Thanks in advance for any help. |
RANDBETWEEN
Sorry. I will use =RANDBETWEEN(1,1000) in 30 cells
"Gaurav" wrote in message ... Hi All, If I use RANDBETWEEN function to generate random samples, how do I make sure that units are not repeate? For example- I have 1000 units and I have to generate 30 samples. I will use RANDBETWEEN(1,30) in 30 cells. How do I make sure that the numbers are not repeated and all the samples are unique? Thanks in advance for any help. |
RANDBETWEEN
See John McGimpsey's site for instructions on resolving this problem
http://www.mcgimpsey.com/excel/udfs/randint.html Gord Dibben MS Excel MVP On Tue, 26 Aug 2008 16:16:20 -0600, "Gaurav" wrote: Hi All, If I use RANDBETWEEN function to generate random samples, how do I make sure that units are not repeate? For example- I have 1000 units and I have to generate 30 samples. I will use RANDBETWEEN(1,30) in 30 cells. How do I make sure that the numbers are not repeated and all the samples are unique? Thanks in advance for any help. |
RANDBETWEEN
One way to generate random numbers without replacement:
Enter the Rand function in an out-of-the-way location of your sheet, =Rand() And copy down, say Z1 to Z1000. Then enter this formula anywhe =INDEX(ROW($A$1:$A$1000),RANK(Z1,$Z$1:$Z$1000)) And copy down as many rows as the amount of numbers you need. Each time you hit <F9, you'll get a new random list. -- HTH, RD --------------------------------------------------------------------------- Please keep all correspondence within the NewsGroup, so all may benefit ! --------------------------------------------------------------------------- "Gaurav" wrote in message ... Sorry. I will use =RANDBETWEEN(1,1000) in 30 cells "Gaurav" wrote in message ... Hi All, If I use RANDBETWEEN function to generate random samples, how do I make sure that units are not repeate? For example- I have 1000 units and I have to generate 30 samples. I will use RANDBETWEEN(1,30) in 30 cells. How do I make sure that the numbers are not repeated and all the samples are unique? Thanks in advance for any help. |
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