The primary use of vital statistics is to: MCQ with Answer and Explanation
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Question #1
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Crude Birth Rate is expressed per:
Correct Answer: Option A
Explanation:
CBR = (Number of live births in a year / Mid-year total population) × 1000.
CBR = (Number of live births in a year / Mid-year total population) × 1000.
This question belongs to:
Accountancy and Statistics
Statistics
Question #2
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If P(A)=0.4, P(A∪B)=0.7, then the probability of B will be maximum when A and B are:
Correct Answer: Option B
Explanation:
P(A∪B)=P(A)+P(B)-P(A∩B). To maximize P(B) given P(A∪B)=0.7 and P(A)=0.4, set P(A∩B)=P(A)=0.4 (i.e., A⊂B). Then 0.7=0.4+P(B)-0.4 => P(B)=0.7 max.
P(A∪B)=P(A)+P(B)-P(A∩B). To maximize P(B) given P(A∪B)=0.7 and P(A)=0.4, set P(A∩B)=P(A)=0.4 (i.e., A⊂B). Then 0.7=0.4+P(B)-0.4 => P(B)=0.7 max.
This question belongs to:
Accountancy and Statistics
Statistics
Question #3
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If P(A)=0.4, P(B)=0.5, and A and B are independent, then P(A∪B) is:
Correct Answer: Option D
Explanation:
0.4+0.5 - (0.4×0.5)=0.9-0.2=0.7.
0.4+0.5 - (0.4×0.5)=0.9-0.2=0.7.
This question belongs to:
Accountancy and Statistics
Statistics
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