The probability of drawing a Spade from a well-shuffled deck of 52 cards is: MCQ with Answer and Explanation

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The probability of drawing a Spade from a well-shuffled deck of 52 cards is:

A. 1/4

B. 13/52

C. 1/13

D. 1/2

Answer: Option A

Solution (By JKSSB Mock Tests)

There are 13 spades in a 52-card deck. Probability = 13/52 = 1/4.

This question belongs to: Accountancy and Statistics Statistics

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Question #1

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In a 2×2 contingency table for attributes A and B, the frequency of (Aβ) represents units that:

A. Do not possess A but possess B

B. Possess A and B

C. Possess neither A nor B

D. Possess A but not B

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Correct Answer: Option D

Explanation:
Standard notation: A = presence of attribute A, β = absence of attribute B. Thus, (Aβ) denotes units with attribute A present and attribute B absent.

This question belongs to: Accountancy and Statistics Statistics

Question #2

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Life tables are primarily used to compute:

A. Fertility rates

B. Migration rates

C. Population density

D. Life expectancy

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Correct Answer: Option D

Explanation:
Life tables synthesize mortality rates to derive life expectancy and survival probabilities.

This question belongs to: Accountancy and Statistics Statistics

Question #3

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General Fertility Rate (GFR) is more refined than Crude Birth Rate because it:

A. Includes stillbirths

B. Uses only women of reproductive age in the denominator

C. Is easier to calculate

D. Adjusts for infant mortality

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Correct Answer: Option B

Explanation:
GFR restricts the denominator to women aged 15-49, the biologically relevant group for childbearing, providing a more accurate measure of fertility intensity than CBR's total population denominator.

This question belongs to: Accountancy and Statistics Statistics

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