Sturges' rule for the number of classes k is: MCQ with Answer and Explanation

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Sturges' rule for the number of classes k is:

A. k = 3.322 log₁₀ N

B. k = log₁₀ N

C. k = 1 + 2.322 log₁₀ N

D. k = 1 + 3.322 log₁₀ N

Answer: Option D

Solution (By JKSSB Mock Tests)

The formula k = 1 + 3.322 log₁₀ N gives an approximate optimal number of classes.

This question belongs to: Accountancy and Statistics Statistics

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Question #1

The maternal mortality ratio in India (SRS 2016-18) is:

A. 113 per 100,000 live births

B. 80 per 100,000

C. 200 per 100,000

D. 130 per 100,000

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Correct Answer: Option A

Explanation:
MMR was 113 per 100,000 live births.

This question belongs to: Accountancy and Statistics Statistics

Question #2

Standardized Death Rate allows comparison by:

A. Focusing only on infant deaths

B. Applying age-specific rates to a common standard population

C. Using the same crude death rate formula for all populations

D. Ignoring age structure entirely

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Correct Answer: Option B

Explanation:
SDR eliminates age structure effects by calculating what the death rate would be if the population had the age distribution of a standard population, enabling unbiased mortality comparisons.

This question belongs to: Accountancy and Statistics Statistics

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The Fisher index is the geometric mean of Laspeyres and Paasche. This ensures it satisfies:

A. Only factor reversal test

B. Only time reversal test

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Correct Answer: Option D

Explanation:
Fisher is designed to meet both tests.

This question belongs to: Accountancy and Statistics Statistics

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