The factor reversal test is satisfied by: MCQ with Answer and Explanation
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Question #1
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If the arithmetic mean of 8, 12, x, 6, 9 is 8, then x is:
Correct Answer: Option A
Explanation:
(8+12+x+6+9)/5 = 8 → 35 + x = 40 → x = 5.
(8+12+x+6+9)/5 = 8 → 35 + x = 40 → x = 5.
This question belongs to:
Accountancy and Statistics
Statistics
Question #2
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Conditional probability P(B|A) is defined as P(A ∩ B) / P(A) provided that:
Correct Answer: Option D
Explanation:
The definition of conditional probability requires P(A) > 0 to avoid division by zero; if P(A)=0, P(B|A) is undefined.
The definition of conditional probability requires P(A) > 0 to avoid division by zero; if P(A)=0, P(B|A) is undefined.
This question belongs to:
Accountancy and Statistics
Statistics
Question #3
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The arithmetic mean of a set of values is 8. If each value is increased by 5, the new mean is:
Correct Answer: Option D
Explanation:
Adding a constant to each observation increases the mean by the same constant.
Adding a constant to each observation increases the mean by the same constant.
This question belongs to:
Accountancy and Statistics
Statistics
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