Which sampling method is MOST appropriate for collecting primary data from a heterogeneous population with distinct subgroups? MCQ with Answer and Explanation

Which sampling method is MOST appropriate for collecting primary data from a heterogeneous population with distinct subgroups?
A. Stratified random sampling
B. Simple random sampling
C. Convenience sampling
D. Snowball sampling
Answer: Option A
Solution (By JKSSB Mock Tests)
Stratified sampling divides the population into homogeneous subgroups (strata) and samples from each, ensuring representation of all key segments and improving precision for subgroup analysis.

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Practice More Statistics Questions

Question #1
If P(A) = 0.4, P(B) = 0.5, and A and B are independent events, what is P(A ∪ B)?
A. 0.2
B. 0.1
C. 0.9
D. 0.7

Correct Answer: Option D


Explanation:
For independent events, P(A ∩ B) = 0.4 × 0.5 = 0.2. Using the addition theorem: P(A ∪ B) = 0.4 + 0.5 - 0.2 = 0.7.

This question belongs to: Accountancy and Statistics Statistics
Question #2
The population of a country in 2020 was 100 million with a growth rate of 2% per year. Assuming exponential growth, the population in 2022 is approximately:
A. 108 million
B. 104 million
C. 104.04 million
D. 102 million

Correct Answer: Option C


Explanation:
Using compound formula: 100 × (1.02)^2 = 104.04 million.

This question belongs to: Accountancy and Statistics Statistics
Question #3
Total Fertility Rate (TFR) of 1.8 in a developed country suggests:
A. Fertility is increasing
B. Population will grow rapidly
C. Population is below replacement level
D. Migration is the only growth source

Correct Answer: Option C


Explanation:
Replacement-level TFR is ~2.1 in low-mortality settings; TFR=1.8 indicates each generation of women has fewer daughters than needed for replacement, leading to eventual population decline without immigration.

This question belongs to: Accountancy and Statistics Statistics