A box contains 5 defective and 15 non-defective items. Two items are drawn. The probability that both are non-defective is: MCQ with Answer and Explanation
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Question #1
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A random experiment is defined as:
Correct Answer: Option A
Explanation:
A random experiment has well-defined possible outcomes, can be repeated under similar conditions, and the exact outcome cannot be predicted with certainty before performing the experiment.
A random experiment has well-defined possible outcomes, can be repeated under similar conditions, and the exact outcome cannot be predicted with certainty before performing the experiment.
This question belongs to:
Accountancy and Statistics
Statistics
Question #2
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A frequency polygon is a graph of:
Correct Answer: Option B
Explanation:
A frequency polygon plots class midpoints on the x‑axis and class frequencies on the y‑axis and joins them by straight lines.
A frequency polygon plots class midpoints on the x‑axis and class frequencies on the y‑axis and joins them by straight lines.
This question belongs to:
Accountancy and Statistics
Statistics
Question #3
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The factor reversal test is satisfied by:
Correct Answer: Option A
Explanation:
Only Fisher's ideal index satisfies both the time reversal and factor reversal tests.
Only Fisher's ideal index satisfies both the time reversal and factor reversal tests.
This question belongs to:
Accountancy and Statistics
Statistics
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