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triangular distribution



 
 
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  #1  
Old December 17th 05, 08:20 PM posted to microsoft.public.excel.misc
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Default triangular distribution

I noticed excel does not have a triangular distribution. Is there a way to
develop a triangular distribution since this is used quite a bit in
statistical analysis? I know there are commercial products available but can
I do this in the standard Excel?
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  #2  
Old December 17th 05, 09:40 PM posted to microsoft.public.excel.misc
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Default triangular distribution

Hi,

For an Excel formula for generating Probability Distribution Curve for
Triangular Distribution for a given set of minimum, maximum, and mode values,
see in

http://www.tech-archive.net/Archive/...4-08/3207.html

Regards,
B. R. Ramachandran

"TD" wrote:

> I noticed excel does not have a triangular distribution. Is there a way to
> develop a triangular distribution since this is used quite a bit in
> statistical analysis? I know there are commercial products available but can
> I do this in the standard Excel?

  #3  
Old December 17th 05, 11:50 PM posted to microsoft.public.excel.misc
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Default triangular distribution

Hi,

If A1, B1, and C1 contain respectively, the minimum, mode, and maximum, of a
triangular distribution, and if A3 contains a value x, use the following
formulas:

For the Probability Density Function, P(x),

=MAX(0,IF(A3<$B$1,2*(A3-$A$1)/(($C$1-$A$1)*($B$1-$A$1)),2*($C$1-A3)/(($C$1-$B$1)*($C$1-$A$1))))

and for the Cumulative Distribution Function, D(x)

=IF(A3<$A$1,0,IF(A3<$B$1,(A3-$A$1)^2/(($C$1-$A$1)*($B$1-$A$1)),
IF(A3<=$C$1,1-($C$1-A3)^2/(($C$1-$B$1)*($C$1-$A$1)),1)))


Regards,
B. R. Ramachandran

"TD" wrote:

> I noticed excel does not have a triangular distribution. Is there a way to
> develop a triangular distribution since this is used quite a bit in
> statistical analysis? I know there are commercial products available but can
> I do this in the standard Excel?

  #4  
Old December 24th 05, 12:30 AM posted to microsoft.public.excel.misc
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Default triangular distribution

Thank you for your help.

"B. R.Ramachandran" wrote:

> Hi,
>
> If A1, B1, and C1 contain respectively, the minimum, mode, and maximum, of a
> triangular distribution, and if A3 contains a value x, use the following
> formulas:
>
> For the Probability Density Function, P(x),
>
> =MAX(0,IF(A3<$B$1,2*(A3-$A$1)/(($C$1-$A$1)*($B$1-$A$1)),2*($C$1-A3)/(($C$1-$B$1)*($C$1-$A$1))))
>
> and for the Cumulative Distribution Function, D(x)
>
> =IF(A3<$A$1,0,IF(A3<$B$1,(A3-$A$1)^2/(($C$1-$A$1)*($B$1-$A$1)),
> IF(A3<=$C$1,1-($C$1-A3)^2/(($C$1-$B$1)*($C$1-$A$1)),1)))
>
>
> Regards,
> B. R. Ramachandran
>
> "TD" wrote:
>
> > I noticed excel does not have a triangular distribution. Is there a way to
> > develop a triangular distribution since this is used quite a bit in
> > statistical analysis? I know there are commercial products available but can
> > I do this in the standard Excel?

 




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