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*DataPoint* Allergies and Outliers

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Andy is suffering from seasonal allergies but the allergy meter says pollen is low. What gives? Outliers. That’s what.

Here’s the bar chart to which Andy refers:


Here’s a pollen heat map:


About the author, Andy

Andy Leonard is a Microsoft Data Platform MVP, Chief Data Engineer at Enterprise Data & Analytics (, SQL Server Integration Services (SSIS) and Business Intelligence Markup Language (Biml) trainer and consultant, author, engineer, and creator of the Data Integration Lifecycle Management Suite (

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