Assertion (A): Fisher's index is called 'ideal' because it satisfies important mathematical tests. Reason (R): It is the geometric mean of Laspeyres and Paasche indices, balancing their biases. MCQ with Answer and Explanation
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Question #1
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In a Poisson distribution, the probability of zero successes is e^{-λ}. If λ=3, this probability is approximately:
Correct Answer: Option C
Explanation:
e^{-3} ≈ 0.0498 ≈ 0.05.
e^{-3} ≈ 0.0498 ≈ 0.05.
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Accountancy and Statistics
Statistics
Question #2
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In a distribution with extreme outliers, which measure of central tendency is most appropriate?
Correct Answer: Option B
Explanation:
The median is resistant to outliers and gives a better central value for skewed distributions.
The median is resistant to outliers and gives a better central value for skewed distributions.
This question belongs to:
Accountancy and Statistics
Statistics
Question #3
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Which measure of central tendency is defined only when all observations are positive?
Correct Answer: Option D
Explanation:
Geometric mean requires all positive values; otherwise it's undefined or zero. Harmonic mean also requires non-zero values, but GM is more restricted. Actually, GM is defined only for positive data if we want real numbers. So C.
Geometric mean requires all positive values; otherwise it's undefined or zero. Harmonic mean also requires non-zero values, but GM is more restricted. Actually, GM is defined only for positive data if we want real numbers. So C.
This question belongs to:
Accountancy and Statistics
Statistics
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