# Problem types - spotting something unusual
## Definition
### [[Nexus - Google Analytics Certificate Course|Google Analytics Certificate]]
>[! Definition]
>Identifying data that is different than from the norm.
## Example problem statements
_How can we avoid future instances of fraudulent activity? _
- Data: historical transaction, balanced data set by oversampling and/or synthetic data.
- Approach: unusual things are unusual. Thus there might not be too many facts that exist in a dataset as examples of the unusual data. Key here is to define some known unusual activity and make a balanced data set in the process phase while keeping all things fair.
## Related
[[Problem types]]
## Resources
## Flashcards
Identifying data that is different than from the norm. @@@ [[Problem types - spotting something unusual]]
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