Assertion (A): Mailed questionnaire method is suitable when the informants are illiterate. Reason (R): Mailed questionnaire does not require any personal interaction. Choose the correct option: MCQ with Answer and Explanation
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Question #1
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Infant Mortality Rate (IMR) is the number of deaths of infants under age 1 per:
Correct Answer: Option B
Explanation:
IMR = (Infant deaths < 1 year / Live births) × 1000.
IMR = (Infant deaths < 1 year / Live births) × 1000.
This question belongs to:
Accountancy and Statistics
Statistics
Question #2
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A car travels 60 km/h for the first half of a distance and 40 km/h for the second half. The average speed (km/h) is:
Correct Answer: Option C
Explanation:
Harmonic mean of speeds: 2 / (1/60 + 1/40) = 2 / (5/120) = 240/5 = 48 km/h.
Harmonic mean of speeds: 2 / (1/60 + 1/40) = 2 / (5/120) = 240/5 = 48 km/h.
This question belongs to:
Accountancy and Statistics
Statistics
Question #3
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Which of the following should be avoided in a good questionnaire?
Correct Answer: Option D
Explanation:
A double‑barreled question asks about two issues at once, creating confusion. It should be avoided.
A double‑barreled question asks about two issues at once, creating confusion. It should be avoided.
This question belongs to:
Accountancy and Statistics
Statistics
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