In attributes, if (AB)=30, (A)=40, (B)=50, N=100, the expected frequency under independence is: MCQ with Answer and Explanation
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Question #1
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For the above frequencies, Yule's coefficient of association Q is:
Correct Answer: Option B
Explanation:
ad = 30×40 = 1200, bc = 20×10 = 200. Q = (1200-200)/(1200+200) = 1000/1400 = 0.714.
ad = 30×40 = 1200, bc = 20×10 = 200. Q = (1200-200)/(1200+200) = 1000/1400 = 0.714.
This question belongs to:
Accountancy and Statistics
Statistics
Question #2
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In attribute classification, the frequency (αβ) represents units that:
Correct Answer: Option B
Explanation:
Using standard notation, α denotes absence of attribute A, β denotes absence of attribute B; thus (αβ) is the count of units lacking both attributes.
Using standard notation, α denotes absence of attribute A, β denotes absence of attribute B; thus (αβ) is the count of units lacking both attributes.
This question belongs to:
Accountancy and Statistics
Statistics
Question #3
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Weighted index numbers are preferred over simple indices because they:
Correct Answer: Option D
Explanation:
Weighted indices assign weights (e.g., expenditure shares) to reflect the economic significance of items, providing a more realistic measure of overall change than simple indices that treat all items equally.
Weighted indices assign weights (e.g., expenditure shares) to reflect the economic significance of items, providing a more realistic measure of overall change than simple indices that treat all items equally.
This question belongs to:
Accountancy and Statistics
Statistics
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