Crude Death Rate is less useful for comparing mortality between countries because it is heavily influenced by: MCQ with Answer and Explanation

Crude Death Rate is less useful for comparing mortality between countries because it is heavily influenced by:
A. Population age structure
B. Data collection methods
C. Birth rates
D. Migration patterns
Answer: Option A
Solution (By JKSSB Mock Tests)
CDR uses total population, so countries with older populations (e.g., Japan) have higher CDRs even with better age-specific survival than younger populations (e.g., Nigeria), necessitating age-standardization.

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Practice More Statistics Questions

Question #1
For any two events A and B, P(A∪B) is:
A. Always ≤ P(A) + P(B)
B. Both A and B
C. Always ≤ 1
D. Always ≥ P(A∩B)

Correct Answer: Option B


Explanation:
By the addition rule, P(A∪B) ≤ P(A)+P(B), and probability of any event is ≤1.

This question belongs to: Accountancy and Statistics Statistics
Question #2
If P(A)=0.3, P(B)=0.5, and P(A∩B)=0.15, then A and B are:
A. Mutually exclusive
B. Both mutually exclusive and independent
C. Independent
D. Dependent

Correct Answer: Option C


Explanation:
P(A)P(B) = 0.3×0.5 = 0.15 = P(A∩B), satisfying the condition for independence.

This question belongs to: Accountancy and Statistics Statistics
Question #3
Which index number is known as 'ideal'?
A. Paasche
B. Marshall-Edgeworth
C. Fisher
D. Laspeyres

Correct Answer: Option C


Explanation:
Fisher's index is called ideal because it satisfies time reversal and factor reversal tests.

This question belongs to: Accountancy and Statistics Statistics