If TFR = 2.1 in a population with negligible migration, this suggests: MCQ with Answer and Explanation

If TFR = 2.1 in a population with negligible migration, this suggests:
A. Population decline
B. Population stability in the long run
C. Rapid population growth
D. Immediate population doubling
Answer: Option B
Solution (By JKSSB Mock Tests)
A TFR of approximately 2.1 is the replacement-level fertility in low-mortality populations, meaning each generation of women has enough daughters to replace themselves, leading to eventual population stabilization.

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Practice More Statistics Questions

Question #1
If events A and B are independent, which of the following is true regarding their complements A' and B'?
A. They are completely associated
B. They are also independent
C. They are mutually exclusive
D. They are dependent

Correct Answer: Option B


Explanation:
A fundamental theorem of probability states that if A and B are independent, their complements A' and B' are also independent.

This question belongs to: Accountancy and Statistics Statistics
Question #2
The concept of 'conditional probability' is needed when:
A. Events are independent
B. Events are mutually exclusive
C. We sum probabilities
D. We want the probability of an event given that another event has already occurred

Correct Answer: Option D


Explanation:
Conditional probability deals with the updated probability after knowing another event has occurred.

This question belongs to: Accountancy and Statistics Statistics
Question #3
For given data Σp₁q₀=480, Σp₀q₀=400, Σp₁q₁=600, Σp₀q₁=500. Fisher's index is:
A. 121.0
B. 120.0
C. 124.9
D. 122.5

Correct Answer: Option B


Explanation:
Laspeyres = 480/400×100=120; Paasche = 600/500×100=120; Fisher = √(120×120) = 120.

This question belongs to: Accountancy and Statistics Statistics