A preliminary test of a questionnaire on a small subset of the population before the main survey is called: MCQ with Answer and Explanation

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A preliminary test of a questionnaire on a small subset of the population before the main survey is called:

A. Sampling

B. Pre-testing or Pilot Survey

C. Stratification

D. Census

Answer: Option B

Solution (By JKSSB Mock Tests)

A pilot survey helps in identifying shortcomings in the questionnaire design before full-scale implementation.

This question belongs to: Accountancy and Statistics Statistics

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Question #1

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Which of the following mortality measures uses a standard population?

A. Age-specific Death Rate

B. Crude Death Rate

C. Standardized Death Rate

D. Infant Mortality Rate

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Correct Answer: Option C

Explanation:
Standardized death rate applies age-specific rates to a standard age distribution.

This question belongs to: Accountancy and Statistics Statistics

Question #2

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If the arithmetic mean of 25, 30, x, 35, 40 is 33, then x is:

A. 32

B. 35

C. 33

D. 30

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Correct Answer: Option B

Explanation:
Sum = 25+30+x+35+40 = 130+x. Mean = (130+x)/5 = 33 ⇒ 130+x=165 ⇒ x=35.

This question belongs to: Accountancy and Statistics Statistics

Question #3

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The value of a random variable that occurs with the highest frequency in a probability distribution is called the:

A. Mode

B. Median

C. Expected value

D. Variance

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Correct Answer: Option A

Explanation:
By definition, the mode represents the most probable or most frequent outcome.

This question belongs to: Accountancy and Statistics Statistics

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