From a standard deck of 52 cards, one card is drawn. What is the probability that it is either a King or a Heart? MCQ with Answer and Explanation
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Question #1
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Which of the following is an example of primary data?
Correct Answer: Option A
Explanation:
Primary data is original data collected firsthand for a specific purpose; a survey questionnaire is a primary source. The other options are secondary data.
Primary data is original data collected firsthand for a specific purpose; a survey questionnaire is a primary source. The other options are secondary data.
This question belongs to:
Accountancy and Statistics
Statistics
Question #2
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If a country's population grows from 50 million to 55 million in 10 years, the average annual growth rate (approximate) is:
Correct Answer: Option C
Explanation:
Using the rule of 70 or simple approximation: Growth rate ≈ [(Final/Initial)^(1/t) - 1] × 100 = [(55/50)^(0.1) - 1] × 100 ≈ (1.1^0.1 - 1)×100 ≈ (1.0096 - 1)×100 ≈ 0.96% ≈ 1.0% per annum.
Using the rule of 70 or simple approximation: Growth rate ≈ [(Final/Initial)^(1/t) - 1] × 100 = [(55/50)^(0.1) - 1] × 100 ≈ (1.1^0.1 - 1)×100 ≈ (1.0096 - 1)×100 ≈ 0.96% ≈ 1.0% per annum.
This question belongs to:
Accountancy and Statistics
Statistics
Question #3
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Life expectancy at birth is calculated from a:
Correct Answer: Option A
Explanation:
Life expectancy is derived from a life table, which summarizes mortality rates at each age.
Life expectancy is derived from a life table, which summarizes mortality rates at each age.
This question belongs to:
Accountancy and Statistics
Statistics
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