The geometric mean is preferred for averaging: MCQ with Answer and Explanation
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Question #1
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If the arithmetic mean of 10 numbers is 40 and the mean of the same numbers after subtracting a constant from each is 25, the constant subtracted was:
Correct Answer: Option C
Explanation:
New mean = old mean - constant ⇒ 25 = 40 - k ⇒ k = 15.
New mean = old mean - constant ⇒ 25 = 40 - k ⇒ k = 15.
This question belongs to:
Accountancy and Statistics
Statistics
Question #2
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When evaluating secondary data for research, which factor is LEAST critical to assess?
Correct Answer: Option C
Explanation:
The visual design elements like color schemes in reports do not affect data validity; critical evaluation focuses on source credibility, methodology, relevance, and timeliness.
The visual design elements like color schemes in reports do not affect data validity; critical evaluation focuses on source credibility, methodology, relevance, and timeliness.
This question belongs to:
Accountancy and Statistics
Statistics
Question #3
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In probability, the sample space for drawing one card from a standard deck has how many outcomes?
Correct Answer: Option B
Explanation:
A standard deck has 52 distinct cards (4 suits × 13 ranks), so the sample space for a single draw contains 52 equally likely elementary outcomes.
A standard deck has 52 distinct cards (4 suits × 13 ranks), so the sample space for a single draw contains 52 equally likely elementary outcomes.
This question belongs to:
Accountancy and Statistics
Statistics
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