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Steven Walfish
Subject Matter Expert
Statistical Outsourcing Services

Understanding Statistical Outliers

Downloadable White Paper (PDF)
Product Description

Statistical outlier identification and remediation is one of the oldest issues with data analysis and reporting. There are many causes of outliers including measurement error, sampling error, incorrect recording or misspecification of the distributional assumptions. Whenever a root cause of an outlier can be identified less statistical justification is needed to remediate. When the root cause is not known or cannot be identified easily statistical methods are employed to identify potential outliers for remediation.

This white paper includes discussion of Box Plots, Histograms, Normal Probability Plots and more. It will help you:

  • Learn to test for Outliers
  • Understand Generalized Extreme Studentized Deviates
  • Use Dixon-type Tests
  • Understand Cochranís Test for Outlying Variances
  • Calculate Robust Estimation of Location
  • Understand Outliers in Regression and Non-Normal Distributions


PACKAGE TYPE Pro
Purchase Price $99
White Paper PDF yes
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