The study of human population, its size, composition, and distribution is called: MCQ with Answer and Explanation
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Question #1
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If two events A and B are independent, the probability that both occur is 0.2 and P(A)=0.5, then P(B) is:
Correct Answer: Option B
Explanation:
P(A)P(B)=0.2 => 0.5×P(B)=0.2 => P(B)=0.4.
P(A)P(B)=0.2 => 0.5×P(B)=0.2 => P(B)=0.4.
This question belongs to:
Accountancy and Statistics
Statistics
Question #2
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The harmonic mean is most appropriate for averaging:
Correct Answer: Option C
Explanation:
Harmonic mean is used for rates where the numerator is constant, such as average speed for fixed distances.
Harmonic mean is used for rates where the numerator is constant, such as average speed for fixed distances.
This question belongs to:
Accountancy and Statistics
Statistics
Question #3
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Crude Death Rate of 8 per 1,000 implies that in a population of 1 million, annual deaths are approximately:
Correct Answer: Option D
Explanation:
CDR = (Deaths / Population) × 1,000 → Deaths = (CDR × Population) / 1,000 = (8 × 1,000,000) / 1,000 = 8,000. Simple application of the rate formula.
CDR = (Deaths / Population) × 1,000 → Deaths = (CDR × Population) / 1,000 = (8 × 1,000,000) / 1,000 = 8,000. Simple application of the rate formula.
This question belongs to:
Accountancy and Statistics
Statistics
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