Data Analysis for ML/AI
Missing values
Patterns of missingness, MAR/MCAR/MNAR, when to drop, when to impute, indicator variables.
5 lessons
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Lesson 1 of 5
MCAR, MAR, and MNAR — kinds of missingness
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Lesson 2 of 5
Imputation strategies
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Lesson 3 of 5
When to drop missing values
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Lesson 4 of 5
Missing-value indicator features
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Lesson 5 of 5
Common pitfalls with missing data