If a coin is tossed 3 times, probability of exactly 2 heads is: MCQ with Answer and Explanation
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Question #1
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In a frequency distribution, if the class marks are 5, 15, 25, 35, the class width is:
Correct Answer: Option A
Explanation:
Difference between successive class marks = 15-5 = 10, so width = 10.
Difference between successive class marks = 15-5 = 10, so width = 10.
This question belongs to:
Accountancy and Statistics
Statistics
Question #2
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Which question type is MOST appropriate for collecting sensitive information like income in a survey?
Correct Answer: Option C
Explanation:
Income ranges reduce respondent discomfort and non-response by avoiding precise disclosure while still providing usable data for analysis, balancing privacy and research needs.
Income ranges reduce respondent discomfort and non-response by avoiding precise disclosure while still providing usable data for analysis, balancing privacy and research needs.
This question belongs to:
Accountancy and Statistics
Statistics
Question #3
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A fair coin is tossed until a head appears. The probability that it takes exactly 3 tosses is:
Correct Answer: Option B
Explanation:
Sequence: T, T, H. Probability = (1/2)² * (1/2) = 1/8.
Sequence: T, T, H. Probability = (1/2)² * (1/2) = 1/8.
This question belongs to:
Accountancy and Statistics
Statistics
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