Data Analysis for ML/AI
Data types and schemas
Numeric, string, datetime, categorical — pick the right type and prevent silent bugs.
5 lessons
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Work through these in order—each lesson builds on the previous one.
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Lesson 1 of 5
Numeric types: int, float, decimal
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Lesson 2 of 5
Strings and categoricals
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Lesson 3 of 5
Dates and timestamps
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Lesson 4 of 5
Type coercion pitfalls
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Lesson 5 of 5
Data schemas and contracts