Yule's coefficient of association Q is defined as (ad - bc)/(ad + bc), where ad = (AB)×(αβ) and bc = (Aβ)×(αB). This coefficient is also known as: MCQ with Answer and Explanation

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Yule's coefficient of association Q is defined as (ad - bc)/(ad + bc), where ad = (AB)×(αβ) and bc = (Aβ)×(αB). This coefficient is also known as:

A. Coefficient of concordance

B. Coefficient of correlation

C. Coefficient of colligation

D. Coefficient of determination

Answer: Option C

Solution (By JKSSB Mock Tests)

Q is Yule's coefficient of association, also called coefficient of colligation.

This question belongs to: Accountancy and Statistics Statistics

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Question #1

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In a standard deck, the probability of drawing a red king is:

A. 1/13

B. 1/52

C. 1/26

D. 2/13

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Correct Answer: Option C

Explanation:
2 red kings (hearts and diamonds) out of 52 = 2/52 = 1/26.

This question belongs to: Accountancy and Statistics Statistics

Question #2

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The combined mean of two groups with n₁=20, mean₁=50 and n₂=30, mean₂=60 is:

A. 54

B. 56

C. 55

D. 57

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Correct Answer: Option B

Explanation:
Combined mean = (20×50 + 30×60) / (20+30) = (1000+1800)/50 = 2800/50 = 56.

This question belongs to: Accountancy and Statistics Statistics

Question #3

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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:

A. Posterior probability

B. Marginal probability

C. Prior probability

D. Likelihood

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Correct Answer: Option C

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.

This question belongs to: Accountancy and Statistics Statistics

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