Which average is strictly impossible to calculate if any of the observations in the dataset is exactly zero? MCQ with Answer and Explanation
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Question #1
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Which of the following is a characteristic of a well-designed questionnaire?
Correct Answer: Option B
Explanation:
Simple language prevents misinterpretation, ensuring reliable and accurate data collection from respondents.
Simple language prevents misinterpretation, ensuring reliable and accurate data collection from respondents.
This question belongs to:
Accountancy and Statistics
Statistics
Question #2
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In a factory, machine A produces 60% of items (defective 2%) and machine B 40% (defective 5%). If an item is defective, the probability it came from B is:
Correct Answer: Option C
Explanation:
Bayes: P(B|D)= (0.05×0.4)/(0.02×0.6 + 0.05×0.4) = 0.02/0.032 = 0.625.
Bayes: P(B|D)= (0.05×0.4)/(0.02×0.6 + 0.05×0.4) = 0.02/0.032 = 0.625.
This question belongs to:
Accountancy and Statistics
Statistics
Question #3
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Secondary data is characterized by which of the following?
Correct Answer: Option A
Explanation:
Secondary data refers to information that was previously gathered by another party for a different objective and is now being reused for a new study.
Secondary data refers to information that was previously gathered by another party for a different objective and is now being reused for a new study.
This question belongs to:
Accountancy and Statistics
Statistics
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