Yule's coefficient of association Q = (ad - bc) / (ad + bc). Here ad and bc refer to: MCQ with Answer and Explanation

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Yule's coefficient of association Q = (ad - bc) / (ad + bc). Here ad and bc refer to:

A. Ultimate class frequencies product

B. Frequencies of A and B only

C. Cross products of the 2×2 table

D. Total frequencies

Answer: Option C

Solution (By JKSSB Mock Tests)

ad = (AB)×(αβ), bc = (Aβ)×(αB), the cross-products of the frequencies.

This question belongs to: Accountancy and Statistics Statistics

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Question #1

Which graphical representation uses cumulative frequencies?

A. Histogram

B. Ogive

C. Bar diagram

D. Frequency polygon

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Correct Answer: Option B

Explanation:
An ogive plots cumulative frequencies against class boundaries.

This question belongs to: Accountancy and Statistics Statistics

Question #2

The Sample Registration System (SRS) is a:

A. Census

B. Complete enumeration

C. Large-scale sample survey

D. Administrative record system

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Correct Answer: Option C

Explanation:
SRS is a dual-record sample survey for estimating vital rates.

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Question #3

Life tables are primarily used to calculate:

A. Migration rates

B. Economic dependency ratios

C. Life expectancy and survival probabilities

D. Fertility rates

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Correct Answer: Option C

Explanation:
Life tables summarize age-specific mortality to compute life expectancy at various ages, probability of survival, and other demographic measures essential for actuarial and population studies.

This question belongs to: Accountancy and Statistics Statistics

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