Random non-int numbers from -1.5 to 1.5 w/o zero in Excel 2003

**Megadementia** · 07-26-2012, 01:59 PM

I need a help.

I need to generate a spreadsheet with many numbers from -1.5 to 1.5.

The numbers must have 2 decimal numbers, ie: 1.48; -0.74; -0.22; 1.23;...

But no zeros must appears and the formula must work on Excel 2003.

2 decimal numbers

Excel 2003

No zeros must appears

**tlafferty** · 07-26-2012, 03:15 PM

=if(int(2*rand()+1)=1,-1,1)*round(9*rand()+1,2)

---------- Post added at 02:15 PM ---------- Previous post was at 01:08 PM ----------

oops....
=ROUND(IF(INT(2*RAND()+1)=2,1,-1)*(1.5*RAND()),2)

**zbor** · 07-26-2012, 03:25 PM

Or this: =(RAND()+1/100)*(1.5-1/100)*SIGN(RAND()-0.5)

**Megadementia** · 07-31-2012, 05:49 PM

Thanks! It is working very well!

To my colleagues in Brazil, the same formula in Excel in Portuguese-BR is:

=ARRED(SE(INT(2*ALEATÓRIO()+1)=2;1;-1)*(1,5*ALEATÓRIO());2)

**Cutter** · 07-31-2012, 06:53 PM

@ Megadementia

Based on your last post it seems that you are satisfied with the solution(s) you've received but you haven't marked your thread as SOLVED. I'll do that for you now but please keep in mind for your future threads that Rule #9 requires you to do that yourself. If your problem has not been solved you can use Thread Tools (located above your first post) and choose "Mark this thread as unsolved".
Thanks.

Also, as a new member of the forum, you may not be aware that you can thank those who have helped you by clicking the small star icon located in the lower left corner of the post in which the help was given. By doing so you can add to the reputation(s) of those who helped.

**daddylonglegs** · 07-31-2012, 07:05 PM

Originally Posted by tlafferty

=ROUND(IF(INT(2*RAND()+1)=2,1,-1)*(1.5*RAND()),2)

I don't believe this fulfils the criteria, RAND() can generate zero and very low values of RAND(), rounded to two decimal places, will generate more zeroes. Try entering the formula in 10,000 rows, you'll get 30+ zeroes

......also you won't get an absolutely even distribution because of use of the ROUND function, that means the values on the extremity (1.5 and -1.5) can happen but will occur on average half as often as other values.

This version should give you an even distribution with no zeroes

=IF(RAND()< 0.5,1,-1)*INT(150*RAND()+1)/100

**Megadementia** · 07-31-2012, 09:26 PM

Roger that! Beg your pardon!

Originally Posted by Cutter

@ Megadementia

Based on your last post it seems that you are satisfied with the solution(s) you've received but you haven't marked your thread as SOLVED. I'll do that for you now but please keep in mind for your future threads that Rule #9 requires you to do that yourself. If your problem has not been solved you can use Thread Tools (located above your first post) and choose "Mark this thread as unsolved".
Thanks.

Also, as a new member of the forum, you may not be aware that you can thank those who have helped you by clicking the small star icon located in the lower left corner of the post in which the help was given. By doing so you can add to the reputation(s) of those who helped.