CA Foundation · Quantitative Aptitude · Statistical Description of Data
A survey form is mailed to 2,000 shop owners in Indore asking about GST compliance costs, but only 500 return it. The main limitation shown by this situation in the mailed questionnaire method is:
The main limitation is the low response rate, which can bias the results. Only 500 of 2,000 shop owners replied, and those who respond may differ systematically from non-respondents. Mailed questionnaires are cheap, reach wide areas and involve no interviewer.
- AHigh cost per respondent
- BLow response rate leading to possible biasCorrect
- CInability to cover a wide area
- DInterviewer bias in recording answers
Explanation
Only 25% responded, and those who reply may differ from those who do not, so results may be biased. A mailed questionnaire is cheap and covers wide areas, and there is no interviewer, so options A, C and D are not the limitation shown.
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