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What is a Data Massage?

 , updated on January 09, 2016
Data massage is a term for cleaning up data that is poorly formatted or missing required data for a particular purpose. The term implies manual processing or highly specific queries to target data that is breaking an automated process or analysis.
The term is also informally used to indicate outliers in data were dropped because they were interfering with visual presentation or confirmation of a particular theory. As such, data massage has potential ethical, compliance and risk implications.
Overview: Data Massage
TypeData Analysis
DefinitionProcessing data to remove or fix entries that are breaking an automated processes or analysis.
ValueCleaning up small subsets of poor quality data that have questionable value.
ExampleAn analysis of 1.2 million customers by location is failing because 4 records have no postal code. The data analyst manually drops them from the dataset and runs the report again.
Related ConceptsConfirmatory Data Analysis
Exploratory Data Analysis

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