In a 2×2 attribute table, if (A)=400, (B)=500, N=1000, and observed (AB)=250, the expected (AB) under independence is: MCQ with Answer and Explanation
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Question #1
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Assertion (A): For a moderately skewed distribution, mean – mode ≈ 3(mean – median). Reason (R): In any skewed distribution, the median always lies between the mean and mode. Choose the correct option:
Correct Answer: Option A
Explanation:
The empirical relationship (A) is true for moderate skewness. In skewed distributions, median lies between mean and mode, but this fact does not directly explain the formula; it's an observed pattern.
The empirical relationship (A) is true for moderate skewness. In skewed distributions, median lies between mean and mode, but this fact does not directly explain the formula; it's an observed pattern.
This question belongs to:
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 C
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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The Wholesale Price Index (WPI) excludes:
Correct Answer: Option C
Explanation:
WPI covers only goods; it does not include services, unlike CPI.
WPI covers only goods; it does not include services, unlike CPI.
This question belongs to:
Accountancy and Statistics
Statistics
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