The difference between the birth rate and death rate is called: MCQ with Answer and Explanation
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Question #1
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A set of 9 numbers has mean 12. If a number 15 is removed, the new mean is:
Correct Answer: Option C
Explanation:
Sum initially = 9 × 12 = 108. After removing 15, sum = 93, n = 8. New mean = 93/8 = 11.625.
Sum initially = 9 × 12 = 108. After removing 15, sum = 93, n = 8. New mean = 93/8 = 11.625.
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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If P(A)=0.4, P(B)=0.5, and P(A∩B)=0.2, then P(A'∩B') is:
Correct Answer: Option D
Explanation:
P(A∪B)=0.4+0.5-0.2=0.7. P(A'∩B')=1-0.7=0.3.
P(A∪B)=0.4+0.5-0.2=0.7. P(A'∩B')=1-0.7=0.3.
This question belongs to:
Accountancy and Statistics
Statistics
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