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Definition of Oversample
1. Noun. (statistics) An additional sample of a subpopulation, above and beyond the portion of a main sample that already belongs to that subpopulation. ¹
2. Verb. (statistics) To sample additional members of a subpopulation, above and beyond the members included in the main sample. ¹
3. Verb. (context: systems) To sample a signal at a frequency well above its Nyquist rate. ¹
¹ Source: wiktionary.com