A card is drawn from a pack of 52 cards. The probability that it is a king or a queen is: MCQ with Answer and Explanation

Question
A card is drawn from a pack of 52 cards. The probability that it is a king or a queen is:
A. 2/13
B. 4/13
C. 1/26
D. 1/13
Answer: Option A
Solution (By JKSSB Mock Tests)
4 kings + 4 queens = 8 favorable. Probability = 8/52 = 2/13.
This question belongs to: Accountancy and Statistics Statistics
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Practice More Statistics Questions

Question #1
Consider the following statements about probability: 1. For any two events, P(A∪B) ≤ P(A) + P(B). 2. If A ⊆ B, then P(A) ≤ P(B). 3. For independent events, P(A|B) = P(A). Which of the above is/are correct?
A. 1, 2 and 3
B. 2 and 3 only
C. 1 and 2 only
D. 1 and 3 only
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Correct Answer: Option A

Explanation:
All are fundamental axioms/theorems of probability.
This question belongs to: Accountancy and Statistics Statistics
Question #2
For a moderately asymmetrical distribution, the empirical relationship between Mean, Median, and Mode is:
A. Mean = 3 Median - 2 Mode
B. Mode = 3 Median - 2 Mean
C. Mode = 2 Median - 3 Mean
D. Median = 3 Mean - 2 Mode
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Correct Answer: Option B

Explanation:
Karl Pearson's empirical relationship holds for moderately skewed distributions: Mode = 3(Median) - 2(Mean).
This question belongs to: Accountancy and Statistics Statistics
Question #3
Which coefficient is commonly used to measure the association of attributes?
A. Yule's coefficient of association
B. Karl Pearson's coefficient
C. Spearman's rank coefficient
D. Fisher's coefficient
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Correct Answer: Option A

Explanation:
Yule's coefficient (Q) specifically measures the intensity of association between two dichotomous qualitative attributes.
This question belongs to: Accountancy and Statistics Statistics
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