For two attributes A and B, the condition for independence is: MCQ with Answer and Explanation

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For two attributes A and B, the condition for independence is:

A. (AB)/N = (A)/N × (B)/N

B. (AB) = (A)(B)

C. (A) = (B)

D. (αβ) = 0

Answer: Option A

Solution (By JKSSB Mock Tests)

Independence means the proportion of both attributes equals the product of individual proportions.

This question belongs to: Accountancy and Statistics Statistics

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Question #1

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Which part of a statistical table provides an explanation of the abbreviations or symbols used in the table?

A. Headnote

B. Title

C. Stub

D. Footnote

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Correct Answer: Option D

Explanation:
Footnotes are placed at the bottom of the table to clarify any specific entries, symbols, or abbreviations.

This question belongs to: Accountancy and Statistics Statistics

Question #2

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Read the following statements about frequency distribution: 1. Exclusive class intervals ensure continuity. 2. Inclusive class intervals leave no gaps. 3. Sturges' rule helps determine the number of classes. Which statement(s) is/are correct?

A. 1 and 3 only

B. 1, 2 and 3

C. 2 and 3 only

D. 1 and 2 only

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Correct Answer: Option A

Explanation:
Exclusive intervals (e.g., 0-10, 10-20) are continuous; inclusive intervals (0-9, 10-19) have gaps. Sturges' rule gives k = 1 + 3.322 log N. Statement 2 is wrong because inclusive intervals do have gaps.

This question belongs to: Accountancy and Statistics Statistics