The condition (A) ≥ (AB) is necessary for: MCQ with Answer and Explanation
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Question #1
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Which of the following is a measure of fertility?
Correct Answer: Option C
Explanation:
Total Fertility Rate (TFR) measures the average number of children a woman would bear; it's a fertility measure.
Total Fertility Rate (TFR) measures the average number of children a woman would bear; it's a fertility measure.
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Accountancy and Statistics
Statistics
Question #2
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If the mean of a dataset is 15 and the sum of squared deviations from the mean is 90 for 10 observations, the variance is:
Correct Answer: Option C
Explanation:
Population variance = 90/10 = 9. Sample variance = 90/9 = 10, but usually variance of the data (population) is 9 if it's the whole set. I'll assume population.
Population variance = 90/10 = 9. Sample variance = 90/9 = 10, but usually variance of the data (population) is 9 if it's the whole set. I'll assume population.
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Accountancy and Statistics
Statistics
Question #3
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In a moderately skewed distribution, the empirical relationship is Mode ≈ 3×Median - 2×Mean. If Mean=60 and Median=58, Mode is approximately:
Correct Answer: Option B
Explanation:
Mode ≈ 3×58 - 2×60 = 174 - 120 = 54. This approximation, attributed to Pearson, holds for unimodal distributions with moderate skewness.
Mode ≈ 3×58 - 2×60 = 174 - 120 = 54. This approximation, attributed to Pearson, holds for unimodal distributions with moderate skewness.
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Accountancy and Statistics
Statistics
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