Life expectancy at birth is computed using: MCQ with Answer and Explanation
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Question #1
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If a country's population grows from 50 million to 55 million in 10 years, the average annual growth rate (approximate) is:
Correct Answer: Option D
Explanation:
Using the rule of 70 or simple approximation: Growth rate ≈ [(Final/Initial)^(1/t) - 1] × 100 = [(55/50)^(0.1) - 1] × 100 ≈ (1.1^0.1 - 1)×100 ≈ (1.0096 - 1)×100 ≈ 0.96% ≈ 1.0% per annum.
Using the rule of 70 or simple approximation: Growth rate ≈ [(Final/Initial)^(1/t) - 1] × 100 = [(55/50)^(0.1) - 1] × 100 ≈ (1.1^0.1 - 1)×100 ≈ (1.0096 - 1)×100 ≈ 0.96% ≈ 1.0% per annum.
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Accountancy and Statistics
Statistics
Question #2
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Which method of collecting primary data is most suitable when informants are illiterate and the investigator wants to ensure high accuracy?
Correct Answer: Option C
Explanation:
Direct personal interview allows the enumerator to clarify questions and probe for accurate responses, making it ideal for illiterate respondents.
Direct personal interview allows the enumerator to clarify questions and probe for accurate responses, making it ideal for illiterate respondents.
This question belongs to:
Accountancy and Statistics
Statistics
Question #3
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According to Census 2011, the population density of India is:
Correct Answer: Option B
Explanation:
The density was 382 persons per square kilometer in 2011.
The density was 382 persons per square kilometer in 2011.
This question belongs to:
Accountancy and Statistics
Statistics
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