Standardized death rate is used to compare mortality between populations with different: MCQ with Answer and Explanation

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Standardized death rate is used to compare mortality between populations with different:

A. Fertility rates

B. Income levels

C. Age structures

D. Population sizes

Answer: Option C

Solution (By JKSSB Mock Tests)

Age structure affects crude death rates; standardization removes this effect to allow fair comparison.

This question belongs to: Accountancy and Statistics Statistics

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Question #1

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Which principle of good questionnaire design emphasizes avoiding questions that suggest a preferred answer?

A. Neutrality

B. Clarity

C. Logical sequence

D. Brevity

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Correct Answer: Option A

Explanation:
Neutrality requires questions to be phrased objectively without leading respondents toward a particular response, ensuring unbiased and accurate data collection.

This question belongs to: Accountancy and Statistics Statistics

Question #2

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The combined mean of two groups with means 40 (size 10) and 60 (size 20) is:

A. 53.33

B. 55

C. 56.67

D. 50

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Correct Answer: Option A

Explanation:
Combined mean = (10×40 + 20×60) / (10+20) = (400 + 1200) / 30 = 1600 / 30 ≈ 53.33. This weights each group's mean by its sample size.

This question belongs to: Accountancy and Statistics Statistics