Types of Data › Types of Data: Understanding Data Classification
Michael BrenndoerferUpdated December 25, 20251 min read
Machine Learning from ScratchAll chapters Part 1 of 9Statistics 101
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A column filled with numbers can record a measurement, a count, a ranking, or nothing more than an identifier. Treat those cases as interchangeable and you may calculate a meaningless average, erase a real ordering, or impose distances on a model that the data never contained. This chapter shows how to distinguish the common data classifications used here, which comparisons and operations their meanings support, and why the label is only the beginning of a defensible analysis.