## Finding data value that contains x% of points

Finding data value that contains x% of points
# 1
12-13-2012
Finding data value that contains x% of points

Hi, I need help on finding the value of my data that encompasses certain percentage of my total data points (n). Attached is an example of my data, n=30. What I want to do is for instance is find the minimum threshold that still encompasses 60% (n=18), 70% (n=21) and 80% (n=24).
Any suggestion on how to go through it? Thanks much.
 ida1215 View Public Profile for ida1215 Find all posts by ida1215
# 2
12-13-2012
There's probably a way to do that statistically. Checking...
 Corona688 View Public Profile for Corona688 Visit Corona688's homepage! Find all posts by Corona688
# 3
12-13-2012
Thanks for having a check, .
 ida1215 View Public Profile for ida1215 Find all posts by ida1215
# 4
12-13-2012
Your data doesn't seem to have a normal distribution.

There's a much more obvious way anyway, don't know why it didn't occur to me before Sort it, then look past the % number of lines you want for the threshold.

This User Gave Thanks to Corona688 For This Post:
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# 5
12-13-2012
Thank you very much Corona688. The data I posted is just a part of the whole data and those were extracted prediction values at certain points and might explain the non-normal distribution (?). Anyways, bunch of thanks.
 ida1215 View Public Profile for ida1215 Find all posts by ida1215

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