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During the data checking process, a researcher may find that a participant's responses are missing key information or are highly suspicious. In such cases, the researcher must decide whether to exclude that participant's data from the analysis. Excluded data should never be deleted or thrown away; instead, it should be set aside with detailed notes explaining the reason for exclusion, as this decision must be reported in the final research write-up.

Excluding Participant Data

When a researcher decides to exclude a participant's data from the analysis due to missing or suspicious responses, the excluded data should be permanently deleted from the dataset to prevent it from affecting future analyses.

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