September 2026
Beginner
352 pages
9h 24m
English
Content preview from Grokking Statistics
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8 Yes, no, or maybe so? Logistic regression and classification
In this chapter
- Classification models and their distinction from regressions
- How to perform logistic regression and validate classification models
- The machine learning workflow and its distinction from traditional statistics
Classifying means choosing a label for something, such as whether an email is spam or not spam, or whether an image contains a dog, cat, or bird. When we classify a prediction or outcome, we are not predicting a continuous value (e.g., 103.5 degrees Fahrenheit) but rather a binary (spam/not spam) or multiple-choice (dog/cat/bird) outcome. We also call this type of problem categorical or consider it a form of classification. Linear regression is not necessarily ...
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