Data preprocessing
A4.2What the syllabus asks of you
- A4.2.1 Describe the significance of data cleaning.
- A4.2.2 Describe the role of feature selection.
- A4.2.3 Describe the importance of dimensionality reduction.
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Drill this topic
Every question on Data preprocessing that your level can use, untimed — answer on paper, then mark yourself against the mark scheme.
Make a worksheet
Choose the years and how many questions, then print it with the answers on separate pages.
022 questions
These are structured questions, answered in working rather than by picking an option, so they are not listed here one by one. The drill above puts each in front of you with its mark scheme to check against.