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Rare events
Occurrences that happen infrequently or have a very low probability of taking place, often of significant interest in statistical analysis and study.
Content analysis
A research method used to systematically analyze the content of communication media through coding and identifying patterns or themes.
Systematic analysis
An organized method of examining and evaluating data or processes by breaking them into smaller parts to better understand the whole.
Existing documents
Previously produced materials (such as records, letters, or reports) used as data sources in qualitative research.
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