Before imputing a missing value, what is the most important thing to establish?
- A Why the value is missing, since missingness is often informative
- B Whether the column is numeric
- C The dataset's file format
- D The model type
Answer
Why the value is missing, since missingness is often informative
A blank cancellation date means the order was not cancelled, not that data is missing. Adding a was-missing flag often preserves useful signal.





