Which of the following is a principle of questionnaire design? MCQ with Answer and Explanation
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Question #1
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If a fair coin is tossed three times, the probability of exactly two heads is:
Correct Answer: Option C
Explanation:
Number of ways: C(3,2)=3; each sequence probability (1/2)³; total 3/8.
Number of ways: C(3,2)=3; each sequence probability (1/2)³; total 3/8.
This question belongs to:
Accountancy and Statistics
Statistics
Question #2
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If the median of 5, 7, 9, x, 11, 13 is 9.5, then x is:
Correct Answer: Option A
Explanation:
The six values in order: 5,7,9,x,11,13. Median = (9+x)/2 = 9.5 ⇒ x=10.
The six values in order: 5,7,9,x,11,13. Median = (9+x)/2 = 9.5 ⇒ x=10.
This question belongs to:
Accountancy and Statistics
Statistics
Question #3
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Two events are mutually exclusive if they:
Correct Answer: Option B
Explanation:
Mutually exclusive events have no common outcome; P(A∩B) = 0.
Mutually exclusive events have no common outcome; P(A∩B) = 0.
This question belongs to:
Accountancy and Statistics
Statistics
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