In data classification, 'class width' refers to: MCQ with Answer and Explanation
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Question #1
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For independent events A and B with P(A)=0.3, P(B)=0.4, the probability that at least one of them occurs is:
Correct Answer: Option D
Explanation:
P(A∪B)=0.3+0.4-0.3×0.4=0.7-0.12=0.58.
P(A∪B)=0.3+0.4-0.3×0.4=0.7-0.12=0.58.
This question belongs to:
Accountancy and Statistics
Statistics
Question #2
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The sex ratio in India (Census 2011) is defined as:
Correct Answer: Option A
Explanation:
Sex ratio is females per 1000 males; in 2011 it was 943.
Sex ratio is females per 1000 males; in 2011 it was 943.
This question belongs to:
Accountancy and Statistics
Statistics
Question #3
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If the crude death rate of population A is higher than B, but after age-standardization A's rate is lower, this indicates:
Correct Answer: Option D
Explanation:
When an older population produces a higher crude rate despite lower age-specific rates, it is due to age confounding.
When an older population produces a higher crude rate despite lower age-specific rates, it is due to age confounding.
This question belongs to:
Accountancy and Statistics
Statistics
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