An example of an endogenous variable is the number of cookies a baker bakes, as it is directly impacted by inputs (quantity of ingredients, time committed to baking, etc.).

Mehta, C.R. and Patel, N.R. (1995) Exact Logistic Regression Theory and Examples. Statistics in Medicine, 14, 2143-2160.

AI is now a part of our everyday lives. From the massive popularity of ChatGPT to Google cramming AI summaries at the top of ...

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A three sigma limit is a statistical calculation in which the data are within three standard deviations from a mean. According to the empirical rule, that's 99.7% of the data.