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Posted 02-07-2019 06:58 PM
(11752 views)

Could you please help me understand how can I detect and remove outliers? I tried to read the relevant documents but I find difficult to understand.

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The first thing is for you to define clearly to yourself what an "outlier" will be. Typical rules are something like x units of difference from a mean (or median) value. Units of difference might be standard deviations, multiples of the Interquartile range or something else or perhaps the smallest and/or largest x percentage of values.

Graphing data is often one way to see if you have values extreme enough that you think they should be eliminated.

Once you can do that definition then providing code to do such depends on the type of rule and data involved.

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Could you please tell me how to graph the data to find the outliers and how

can I eliminate it?

can I eliminate it?

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Have you taken the free SAS e-course on Statistics with SAS? If not, it's free and available via e-learning.

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