For perfect positive association between attributes A and B, we expect: MCQ with Answer and Explanation

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For perfect positive association between attributes A and B, we expect:

A. (αB) = 0

B. Both (Aβ) and (αB) = 0

C. (Aβ) = 0

D. (AB) = 0

Answer: Option B

Solution (By JKSSB Mock Tests)

Perfect positive association means all A's are B's and all B's are A's, so no A without B and no B without A.

This question belongs to: Accountancy and Statistics Statistics

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The harmonic mean is the reciprocal of the arithmetic mean of:

A. Reciprocals of the observations

B. The observations themselves

C. Squares of observations

D. Square roots of observations

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Correct Answer: Option A

Explanation:
HM = 1 / [ (1/n) Σ (1/x_i) ].

This question belongs to: Accountancy and Statistics Statistics

Question #2

General Fertility Rate (GFR) is the number of live births per:

A. 1000 women of reproductive age (15-49)

B. 1000 total population

C. 1000 live births

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Correct Answer: Option A

Explanation:
GFR = (Live births / Women aged 15-49) × 1000, focusing on the population at risk.

This question belongs to: Accountancy and Statistics Statistics

Question #3

The primary advantage of secondary data is:

A. High accuracy

B. Unique

C. Saves time and money

D. Tailored to research need

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Correct Answer: Option C

Explanation:
Secondary data is already available, reducing time and cost of collection.

This question belongs to: Accountancy and Statistics Statistics

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