If the occurrence of event A does not affect the probability of event B, then A and B are: MCQ with Answer and Explanation

Question

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If the occurrence of event A does not affect the probability of event B, then A and B are:

A. Equally likely

B. Independent

C. Mutually exclusive

D. Dependent

Answer: Option B

Solution (By JKSSB Mock Tests)

Independence means P(B|A) = P(B).

This question belongs to: Accountancy and Statistics Statistics

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Question #1

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For a set of values, the sum of squared deviations is minimum when taken from:

A. Median

B. Arithmetic mean

C. Geometric mean

D. Mode

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Correct Answer: Option B

Explanation:
The arithmetic mean minimizes the sum of squared deviations.

This question belongs to: Accountancy and Statistics Statistics

Question #2

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Weighted mean is used when:

A. Distribution is symmetric

B. Data are qualitative

C. All observations are equal

D. Different observations have different importance

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Correct Answer: Option D

Explanation:
Weighted mean assigns weights to reflect the varying importance of items.

This question belongs to: Accountancy and Statistics Statistics

Question #3

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Consumer Price Index (CPI) measures changes in:

A. Retail prices of a fixed basket of goods and services

B. Export prices

C. Industrial production

D. Wholesale prices

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Correct Answer: Option A

Explanation:
CPI tracks the average change over time in the prices paid by consumers for a market basket of goods and services.

This question belongs to: Accountancy and Statistics Statistics

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