Weighted mean is preferred over simple arithmetic mean when: MCQ with Answer and Explanation
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Question #1
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The average wage of 10 male workers is Rs. 500, and of 10 female workers is Rs. 400. What is the combined mean wage?
Correct Answer: Option A
Explanation:
Combined mean = (n1*x1 + n2*x2) / (n1+n2) = (5000 + 4000) / 20 = 450.
Combined mean = (n1*x1 + n2*x2) / (n1+n2) = (5000 + 4000) / 20 = 450.
This question belongs to:
Accountancy and Statistics
Statistics
Question #2
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Which of the following is a use of vital statistics?
Correct Answer: Option D
Explanation:
Vital statistics are essential for public health planning and policy formulation.
Vital statistics are essential for public health planning and policy formulation.
This question belongs to:
Accountancy and Statistics
Statistics
Question #3
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Demographic transition theory suggests that in the third stage, populations experience:
Correct Answer: Option D
Explanation:
Stage three of demographic transition features falling fertility due to urbanization, education, and contraception, while mortality remains low, leading to slowing population growth.
Stage three of demographic transition features falling fertility due to urbanization, education, and contraception, while mortality remains low, leading to slowing population growth.
This question belongs to:
Accountancy and Statistics
Statistics
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