Perinatal mortality rate includes: MCQ with Answer and Explanation
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Question #1
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A bag contains 5 white and 3 black balls. Two balls are drawn without replacement. The probability that they are of different colors is:
Correct Answer: Option D
Explanation:
P(different) = P(white then black) + P(black then white) = (5/8)(3/7) + (3/8)(5/7) = 15/56 + 15/56 = 30/56 = 15/28. This accounts for both orders of drawing.
P(different) = P(white then black) + P(black then white) = (5/8)(3/7) + (3/8)(5/7) = 15/56 + 15/56 = 30/56 = 15/28. This accounts for both orders of drawing.
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Accountancy and Statistics
Statistics
Question #2
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The sex ratio in India is defined as:
Correct Answer: Option A
Explanation:
Sex ratio = (number of females / number of males) × 1000.
Sex ratio = (number of females / number of males) × 1000.
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Accountancy and Statistics
Statistics
Question #3
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Which type of classification is used when data is grouped according to time periods such as years, months, or quarters?
Correct Answer: Option C
Explanation:
Chronological classification organizes data based on time sequences, enabling analysis of trends, patterns, and changes over specific periods like years or months.
Chronological classification organizes data based on time sequences, enabling analysis of trends, patterns, and changes over specific periods like years or months.
This question belongs to:
Accountancy and Statistics
Statistics
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