When data is classified according to time (e.g., years, months, weeks), it is called: MCQ with Answer and Explanation
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Question #1
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Weighted mean is preferred over simple arithmetic mean when:
Correct Answer: Option A
Explanation:
Weighted mean assigns different weights to observations based on their relative importance, providing a more accurate central value when some data points carry more significance than others.
Weighted mean assigns different weights to observations based on their relative importance, providing a more accurate central value when some data points carry more significance than others.
This question belongs to:
Accountancy and Statistics
Statistics
Question #2
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If the price index for 2021 (base 2020) is 110 and for 2022 (base 2021) is 105, the chain index for 2022 with base 2020 is:
Correct Answer: Option B
Explanation:
Chain index = 110 × (105/100) = 115.5.
Chain index = 110 × (105/100) = 115.5.
This question belongs to:
Accountancy and Statistics
Statistics
Question #3
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In a 2×2 contingency table for attributes A and B, the frequency of (Aβ) represents units that:
Correct Answer: Option A
Explanation:
Standard notation: A = presence of attribute A, β = absence of attribute B. Thus, (Aβ) denotes units with attribute A present and attribute B absent.
Standard notation: A = presence of attribute A, β = absence of attribute B. Thus, (Aβ) denotes units with attribute A present and attribute B absent.
This question belongs to:
Accountancy and Statistics
Statistics
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