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Question

In which of the following modes of data collection is the response rate lowest?

A
Personal interview
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B
Telephonic interview
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C
Mailing questionnaire
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D
Equal for all modes
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Solution

The correct option is C Mailing questionnaire
The response rate is lowest for 'mailing questionnaire' mode because respondents may not complete the questionnaire partially or fully. It may get lost in the mail also.

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