If (A)=60, (B)=40, N=100, and attributes are independent, then (AB) should be: MCQ with Answer and Explanation

Question
If (A)=60, (B)=40, N=100, and attributes are independent, then (AB) should be:
A. 30
B. 20
C. 100
D. 24
Answer: Option D
Solution (By JKSSB Mock Tests)
Expected (AB) = (A)×(B)/N = 60×40/100 = 24.
This question belongs to: Accountancy and Statistics Statistics
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Practice More Statistics Questions

Question #1
Life expectancy at birth is best interpreted as:
A. The maximum age reached by any individual in the population
B. The median age at death in a given year
C. The average number of years a newborn is expected to live if current mortality patterns persist
D. The age by which 50% of the population has died
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Correct Answer: Option C

Explanation:
Life expectancy is a period measure derived from a life table, representing the mean survival time for a hypothetical cohort experiencing current age-specific death rates throughout life.
This question belongs to: Accountancy and Statistics Statistics
Question #2
Which of the following is a component of HDI (Human Development Index)?
A. Net Reproduction Rate
B. Crude Death Rate
C. Life expectancy at birth
D. Gross Reproduction Rate
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Correct Answer: Option C

Explanation:
HDI includes life expectancy, education, and income.
This question belongs to: Accountancy and Statistics Statistics
Question #3
Standardized death rate is used to compare mortality across populations differing in:
A. Income
B. Total size
C. Sex ratio
D. Age structure
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Correct Answer: Option D

Explanation:
Age standardization removes the confounding effect of different age compositions.
This question belongs to: Accountancy and Statistics Statistics
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