An ogive is used to find which measure of central tendency? MCQ with Answer and Explanation

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An ogive is used to find which measure of central tendency?

A. Geometric mean

B. Median

C. Mean

D. Mode

Answer: Option B

Solution (By JKSSB Mock Tests)

Median corresponds to N/2 point on the less-than ogive.

This question belongs to: Accountancy and Statistics Statistics

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Question #1

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For two attributes, if (AB) is less than the expected frequency under independence, there is:

A. Perfect association

B. Positive association

C. Negative association

D. No association

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Correct Answer: Option C

Explanation:
Observed less than expected indicates negative association.

This question belongs to: Accountancy and Statistics Statistics

Question #2

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Given N=100, (A)=40, (B)=30. The expected frequency of (AB) under independence is:

A. 12

B. 40

C. 20

D. 30

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Correct Answer: Option A

Explanation:
Expected (AB) = (A)×(B)/N = 40×30/100 = 12.

This question belongs to: Accountancy and Statistics Statistics

Question #3

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If P(A) = 0.4, P(B) = 0.5, and P(A ∩ B) = 0.2, then P(A|B) is:

A. 0.4

B. 0.2

C. 0.5

D. 0.8

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Correct Answer: Option A

Explanation:
Conditional probability P(A|B) = P(A ∩ B) / P(B) = 0.2 / 0.5 = 0.4. This represents the probability of A occurring given that B has already occurred.

This question belongs to: Accountancy and Statistics Statistics

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