The dependency ratio in India has been declining primarily due to: MCQ with Answer and Explanation

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The dependency ratio in India has been declining primarily due to:

A. Increasing mortality

B. Emigration

C. Increasing old age population

D. Declining fertility

Answer: Option D

Solution (By JKSSB Mock Tests)

Falling birth rates reduce the proportion of children (0-14), lowering the dependency ratio, at least in the short-medium term.

This question belongs to: Accountancy and Statistics Statistics

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Question #1

Which of the following statements about maternal mortality ratio (MMR) is incorrect?

A. High MMR indicates poor maternal healthcare.

B. MMR has declined in India over recent decades.

C. MMR is a measure of fertility.

D. MMR is the number of maternal deaths per 100,000 live births.

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Correct Answer: Option C

Explanation:
MMR is a mortality indicator, not a fertility measure.

This question belongs to: Accountancy and Statistics Statistics

Question #2

If the arithmetic mean of 10 numbers is 40 and the mean of the same numbers after subtracting a constant from each is 25, the constant subtracted was:

A. 15

B. 10

C. 25

D. 20

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Correct Answer: Option A

Explanation:
New mean = old mean - constant ⇒ 25 = 40 - k ⇒ k = 15.

This question belongs to: Accountancy and Statistics Statistics

Question #3

Which of the following statements about attributes is false?

A. Yule's Q ranges from -1 to +1.

B. Consistency requires all ultimate frequencies to be positive.

C. Ultimate class frequencies are mutually exclusive and exhaustive.

D. The number of ultimate classes for n attributes is 2^n.

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Correct Answer: Option B

Explanation:
Consistency requires non-negative (≥0), not strictly positive. Some can be zero.

This question belongs to: Accountancy and Statistics Statistics

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