Index numbers are generally known as: MCQ with Answer and Explanation
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Question #1
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Pilot survey helps in:
Correct Answer: Option B
Explanation:
Pilot survey tests the questionnaire and survey procedures before the main survey.
Pilot survey tests the questionnaire and survey procedures before the main survey.
This question belongs to:
Accountancy and Statistics
Statistics
Question #2
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A box contains 4 white and 2 black balls. Two balls are drawn successively with replacement. Probability both are white is:
Correct Answer: Option C
Explanation:
With replacement: P(WW) = (4/6)×(4/6) = 16/36 = 4/9.
With replacement: P(WW) = (4/6)×(4/6) = 16/36 = 4/9.
This question belongs to:
Accountancy and Statistics
Statistics
Question #3
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If P(A) = 0.6, P(B) = 0.7, and P(A ∪ B) = 0.9, then P(A ∩ B) is:
Correct Answer: Option D
Explanation:
By addition theorem: P(A∪B) = P(A) + P(B) - P(A∩B) → 0.9 = 0.6 + 0.7 - P(A∩B) → P(A∩B) = 1.3 - 0.9 = 0.4.
By addition theorem: P(A∪B) = P(A) + P(B) - P(A∩B) → 0.9 = 0.6 + 0.7 - P(A∩B) → P(A∩B) = 1.3 - 0.9 = 0.4.
This question belongs to:
Accountancy and Statistics
Statistics
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