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Guidelines enhance validity in handling survey data, addressing common challenges.
The survey is a much-used Extension tool of the trade. Some tricks of the trade in handling data increase validity. Here are some tips for handling: (1) missing data, (2) nonsense or error responses, (3) scaling concerns, (4) "other" categories of responses, and (5) "not applicable" responses.
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Emma Van Tilburg Norland (1991) studied this question.
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