How to detect outliers in an ArrayList

Question

I\'m trying to think of some code that will allow me to search through my ArrayList and detect any values outside the common range of \"good values.\"

Example: 100 1

Answer 1

An implementation of the Grubb's test can be found at MathUtil.java. It will find a single outlier, of which you can remove from your list and repeat until you've removed all outliers.

Depends on commons-math, so if you're using Gradle:

dependencies {
  compile 'org.apache.commons:commons-math:2.2'
}