I have a Reference Interval Project using the Percentile met

I have a Reference Interval Project using the Percentile method at the 2.5th and 97.5th percentile cutoffs, which is to  exclude any outliers from the data. What is the formula for Percentile method?

Solution

We use the box- and whiskers plot to find out the outliers in the data.

Here is an example of how to implement that method with detailed explanation.

http://www.purplemath.com/modules/boxwhisk3.htm

the whiskers can be drawn at 2.5 and 97.5 percentiles and anything beyond that would be an outlier

Hope this might help you.