The probability of obtaining a sum of 9 in a single throw of two dice is: MCQ with Answer and Explanation
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Question #1
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Bayes' theorem is expressed as P(A|B) = [P(B|A) × P(A)] / P(B). Here, P(A) is called the:
Correct Answer: Option B
Explanation:
In Bayesian inference, P(A) is the prior probability, representing initial belief about hypothesis A before observing evidence B; P(A|B) is the updated posterior probability.
In Bayesian inference, P(A) is the prior probability, representing initial belief about hypothesis A before observing evidence B; P(A|B) is the updated posterior probability.
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Accountancy and Statistics
Statistics
Question #2
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If two attributes have perfect positive association, then:
Correct Answer: Option D
Explanation:
Perfect positive association means all A's are B's and all B's are A's, so (AB) equals both marginals.
Perfect positive association means all A's are B's and all B's are A's, so (AB) equals both marginals.
This question belongs to:
Accountancy and Statistics
Statistics
Question #3
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Which sampling method is MOST appropriate for collecting primary data from a heterogeneous population with distinct subgroups?
Correct Answer: Option A
Explanation:
Stratified sampling divides the population into homogeneous subgroups (strata) and samples from each, ensuring representation of all key segments and improving precision for subgroup analysis.
Stratified sampling divides the population into homogeneous subgroups (strata) and samples from each, ensuring representation of all key segments and improving precision for subgroup analysis.
This question belongs to:
Accountancy and Statistics
Statistics
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