In a dataset with an even number of observations, the median is calculated as: MCQ with Answer and Explanation
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Question #1
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Which of the following is a limitation of the questionnaire method?
Correct Answer: Option C
Explanation:
Questionnaires, especially mailed ones, often suffer from poor response rates, leading to bias.
Questionnaires, especially mailed ones, often suffer from poor response rates, leading to bias.
This question belongs to:
Accountancy and Statistics
Statistics
Question #2
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A student's marks in three subjects with weights 3, 2, 1 are 80, 90, 70 respectively. The weighted mean is:
Correct Answer: Option C
Explanation:
Weighted sum = 3×80 + 2×90 + 1×70 = 490. Sum of weights = 6. Mean = 490/6 = 81.67.
Weighted sum = 3×80 + 2×90 + 1×70 = 490. Sum of weights = 6. Mean = 490/6 = 81.67.
This question belongs to:
Accountancy and Statistics
Statistics
Question #3
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Which measure of central tendency is not affected by extreme values?
Correct Answer: Option C
Explanation:
The median depends only on the middle value(s) and is resistant to outliers.
The median depends only on the middle value(s) and is resistant to outliers.
This question belongs to:
Accountancy and Statistics
Statistics
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