Which of the following is a principle of a good questionnaire? MCQ with Answer and Explanation

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Which of the following is a principle of a good questionnaire?

A. Include leading questions

B. Use double negatives for clarity

C. Ask two questions in one

D. Use simple and clear language

Answer: Option D

Solution (By JKSSB Mock Tests)

Simple and clear language reduces misunderstanding and improves response quality.

This question belongs to: Accountancy and Statistics Statistics

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Question #1

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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:

A. 50

B. 45

C. 48

D. 52

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Correct Answer: Option C

Explanation:
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 #2

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The total of all frequencies in a frequency distribution is equal to the:

A. Width of the highest class

B. Highest cumulative frequency

C. Class mark of the last class

D. Mean of the frequencies

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Correct Answer: Option B

Explanation:
In a 'less than' cumulative frequency distribution, the final cumulative frequency equals the total number of observations (N).

This question belongs to: Accountancy and Statistics Statistics

Question #3

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Which measure of central tendency is the most stable from sample to sample?

A. None

B. Mode

C. Median

D. Mean

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Correct Answer: Option D

Explanation:
The arithmetic mean is based on all observations and has the smallest sampling variance among unbiased estimators of the population mean.

This question belongs to: Accountancy and Statistics Statistics

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