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Discussions

Solve problems, and share tips and tricks with other JMP users.
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statganda
statganda
Level I

percentile formula

Feb 16, 2011 04:16 PM (14018 views)
Dear community,

Please state the percetnile formula being used in JMP tabulate function. I know this is not the same as the formula in excel because they are giving me different result.

I need it badly to justify the JMP application in our system.

Thanks
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Accepted Solutions
Jeff_Perkinson
Community Manager Jeff_Perkinson
Community Manager Community Manager
Solution

Re: percentile formula

Created: Feb 16, 2011 05:37 PM  |  Last Modified: Mar 1, 2020 1:12 PM (15666 views)  |  Posted in reply to message from statganda 02-16-2011

Hi statganda,

The process for computing quantiles is found in the Statistical Details for Distribution platform.

Jeff

-Jeff

View solution in original post

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Jeff_Perkinson
Community Manager Jeff_Perkinson
Community Manager Community Manager
Solution

Re: percentile formula

Created: Feb 16, 2011 05:37 PM  |  Last Modified: Mar 1, 2020 1:12 PM (15667 views)  |  Posted in reply to message from statganda 02-16-2011

Hi statganda,

The process for computing quantiles is found in the Statistical Details for Distribution platform.

Jeff

-Jeff
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statganda
statganda
Level I

Re: percentile formula

Mar 2, 2011 06:48 PM (13730 views)  |  Posted in reply to message from Jeff_Perkinson 02-16-2011
Hi Jeff,

This is very useful, because of this i was able to explain to other people logical the JMP formula is.

Thanks
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ms
Super User (Alumni) ms
Super User (Alumni)

Re: percentile formula

Feb 16, 2011 06:03 PM (13730 views)  |  Posted in reply to message from statganda 02-16-2011
JMP quantiles seem to give the same results as the Excel percentile.exc function (found in newer Excel versions). Functions percentile.inc and the (depreciated) percentile can yield different results from JMP.

If you use tabulate you may need to "set format" to display all decimal numbers of the interpolated result.
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