The population density of a state is 500 persons per sq km and its area is 200 sq km. The total population is: MCQ with Answer and Explanation

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The population density of a state is 500 persons per sq km and its area is 200 sq km. The total population is:

A. 250,000

B. 100,000

C. 10,000

D. 2.5

Answer: Option B

Solution (By JKSSB Mock Tests)

Population = density × area = 500 × 200 = 100,000.

This question belongs to: Accountancy and Statistics Statistics

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Question #1

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For a set of numbers, the sum of squared deviations from the arithmetic mean is 100 and n=10. The variance is:

A. 10

B. 11.11

C. 1

D. 9

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Correct Answer: Option A

Explanation:
Population variance = 100/10 = 10. Sample variance would be 100/9≈11.11, but question likely assumes population. I'll specify 'if data is population', but not specified. I'll assume population for simplicity.

This question belongs to: Accountancy and Statistics Statistics

Question #2

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Yule's coefficient of association Q is defined as (ad - bc)/(ad + bc), where ad = (AB)×(αβ) and bc = (Aβ)×(αB). This coefficient is also known as:

A. Coefficient of colligation

B. Coefficient of determination

C. Coefficient of correlation

D. Coefficient of concordance

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Correct Answer: Option A

Explanation:
Q is Yule's coefficient of association, also called coefficient of colligation.

This question belongs to: Accountancy and Statistics Statistics

Question #3

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Classification of data by attributes such as religion or literacy is called:

A. Qualitative classification

B. Chronological classification

C. Quantitative classification

D. Geographical classification

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Correct Answer: Option A

Explanation:
Qualitative classification groups data based on non-numerical characteristics (attributes), enabling analysis of categorical variables like religion, literacy, or occupation.

This question belongs to: Accountancy and Statistics Statistics

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