Essential Math for Data Science: Take Control of Your Data with Fundamental Linear Algebra, Probability, and Statistics (Grayscale Indian Edition)

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There will almost always be some discrepancy between the formula presented as part of the theory vs the formula actually used in the python code.The theory part seems to have the most errors; python code should generally be relied on. Ex: Confusion matrices diagram (fig. 6-18) I'm fairly sure is inaccurate. There's potential for this to be a useful resource but right now it just does more harm than good because there was no QA done on this before being published.