Which average is most appropriate for averaging ratios and rates when the denominators are variable? MCQ with Answer and Explanation

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Which average is most appropriate for averaging ratios and rates when the denominators are variable?

A. Harmonic mean

B. Weighted arithmetic mean

C. Median

D. Arithmetic mean

Answer: Option B

Solution (By JKSSB Mock Tests)

When denominators vary, a weighted mean using denominators as weights is appropriate.

This question belongs to: Accountancy and Statistics Statistics

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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:

A. 1000 population

B. 1000 live births

C. 1000 children

D. 1000 women

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Correct Answer: Option B

Explanation:
IMR = (Infant deaths < 1 year / Live births) × 1000.

This question belongs to: Accountancy and Statistics Statistics

Question #2

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Which of the following is a vital event?

A. Enrollment in school

B. Employment

C. Migration

D. Marriage

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Correct Answer: Option D

Explanation:
Vital events include births, deaths, marriages, divorces.

This question belongs to: Accountancy and Statistics Statistics

Question #3

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Total Fertility Rate (TFR) is a period measure that assumes:

A. Women will experience current age-specific fertility rates throughout their lives

B. Migration is zero

C. Mortality rates remain constant

D. All women marry at the same age

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Correct Answer: Option A

Explanation:
TFR sums current ASFRs to estimate completed fertility for a hypothetical cohort, assuming no future changes in age-specific fertility behavior, making it a snapshot of current fertility intensity.

This question belongs to: Accountancy and Statistics Statistics

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