For attributes, the class frequency (α) denotes: MCQ with Answer and Explanation

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For attributes, the class frequency (α) denotes:

A. Number possessing A

B. Number not possessing A

C. Total frequency

D. Number possessing both A and B

Answer: Option B

Solution (By JKSSB Mock Tests)

(α) is the number of items that lack attribute A.

This question belongs to: Accountancy and Statistics Statistics

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Question #1

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Which of the following describes the Natural Increase of a population?

A. Immigration - Emigration

B. Births + In-migration

C. Births - Deaths

D. (Births - Deaths) + (Immigration - Emigration)

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Correct Answer: Option C

Explanation:
Natural increase is driven purely by vital events (Births minus Deaths), ignoring migration.

This question belongs to: Accountancy and Statistics Statistics

Question #2

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Conditional probability P(B|A) is defined as P(A ∩ B) / P(A) provided that:

A. P(A ∪ B) = 1

B. P(B) > 0

C. A and B are independent

D. P(A) > 0

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Correct Answer: Option D

Explanation:
The definition of conditional probability requires P(A) > 0 to avoid division by zero; if P(A)=0, P(B|A) is undefined.

This question belongs to: Accountancy and Statistics Statistics

Question #3

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The geometric mean is equal to the arithmetic mean when:

A. Data contain negative numbers

B. All values are different

C. All values are equal

D. Data are symmetric

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Correct Answer: Option C

Explanation:
AM = GM if and only if all numbers are identical.

This question belongs to: Accountancy and Statistics Statistics

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