If (AB) = 0, the attributes A and B are: MCQ with Answer and Explanation

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If (AB) = 0, the attributes A and B are:

A. Complete disassociation

B. Complete positive association

C. Independent

D. Randomly associated

Answer: Option A

Solution (By JKSSB Mock Tests)

(AB)=0 means no object possesses both A and B, indicating perfect negative association (complete disassociation).

This question belongs to: Accountancy and Statistics Statistics

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Question #1

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Age-specific fertility rate for age group 25-29 is 120 per 1000 women. If there are 15,000 women in this age group, the expected number of births to them is:

A. 2000

B. 1200

C. 1800

D. 1500

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Correct Answer: Option C

Explanation:
Births = ASFR × (number of women) / 1000 = 120 × 15000 / 1000 = 1800.

This question belongs to: Accountancy and Statistics Statistics

Question #2

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For an even number of observations, the median is:

A. The mean of all values

B. The middle value

C. The average of the two middle values

D. The most frequent value

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Correct Answer: Option C

Explanation:
If n is even, median = average of (n/2)th and (n/2 + 1)th ordered values.

This question belongs to: Accountancy and Statistics Statistics

Question #3

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In a frequency polygon, the points plotted are:

A. Class midpoints vs frequencies

B. Upper limits vs frequencies

C. Lower limits vs frequencies

D. Cumulative frequencies vs upper boundaries

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Correct Answer: Option A

Explanation:
A frequency polygon connects the midpoints of histogram bars at their respective frequencies.

This question belongs to: Accountancy and Statistics Statistics

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