Cleaning Data In R

Teach practical cleaning without pretending cleaning is neutral.

Units

1. Unit 05.00: Count first, ask why second, decide third
2. Unit 05.01: Duplicate on the key, not on every column
3. Unit 05.02: Impossible, implausible, and who handles which
4. Unit 05.03: as.numeric() never fails, and that is the problem
5. Unit 05.04: Normalise before you count
6. Unit 05.05: A factor is a category with a declared order
7. Unit 05.06: Never let a date format be guessed
8. Unit 05.07: Every removal, with its reason and its count

Module work

• Activity
• Knowledge check
• Summary