Compute Fisher's ideal index from: Σp₀q₀=200, Σp₀q₁=250, Σp₁q₀=300, Σp₁q₁=360. MCQ with Answer and Explanation
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Question #1
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The 'life expectancy at birth' in India as per recent SRS is about:
Correct Answer: Option B
Explanation:
Life expectancy at birth is around 69 years (2014-18).
Life expectancy at birth is around 69 years (2014-18).
This question belongs to:
Accountancy and Statistics
Statistics
Question #2
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The harmonic mean of speeds 30 km/h and 60 km/h for equal distances is:
Correct Answer: Option B
Explanation:
For equal distances, average speed = harmonic mean = 2 / (1/30 + 1/60) = 2 / (2/60 + 1/60) = 2 / (3/60) = 2 × 20 = 40 km/h. Arithmetic mean (45) would be incorrect here.
For equal distances, average speed = harmonic mean = 2 / (1/30 + 1/60) = 2 / (2/60 + 1/60) = 2 / (3/60) = 2 × 20 = 40 km/h. Arithmetic mean (45) would be incorrect here.
This question belongs to:
Accountancy and Statistics
Statistics
Question #3
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Assertion (A): In any probability distribution, P(A) + P(A') = 1. Reason (R): A and A' are mutually exclusive and exhaustive events. Choose the correct option:
Correct Answer: Option B
Explanation:
Complementary events partition the sample space, so their probabilities sum to 1. R correctly explains A.
Complementary events partition the sample space, so their probabilities sum to 1. R correctly explains A.
This question belongs to:
Accountancy and Statistics
Statistics
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