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Archives: February 2015

Outlier Detection with SQL Server, part 3.6: Chauvenet’s Criterion

By Steve Bolton

…………This is the last of six articles I’ve segregated in this middle of my mistutorial series on identifying outlying values with SQL Server, because they turned out to be difficult to apply to the typical use cases DBAs encounter. After this detour we’ll get back on… Read more

0 comments, 1,421 reads

Posted in Multidimensional Mayhem on 28 February 2015

Outlier Detection with SQL Server, part 3.5: The Modified Thompson Tau Test

By Steve Bolton

…………Based on what little experience I’ve gained from writing this series on finding outliers in SQL Server databases, I expected the Modified Thompson Tau test to be a clunker. It marries the math underpinning one of the most ubiquitous means of outlier detection, Z-Scores, with the… Read more

0 comments, 8,138 reads

Posted in Multidimensional Mayhem on 14 February 2015