For a symmetric distribution, which statement is correct? MCQ with Answer and Explanation

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For a symmetric distribution, which statement is correct?

A. Mean = Median = Mode

B. Mean - Mode = 3(Mean - Median)

C. Median = (Mean + Mode)/2

D. Mode = 3Median - 2Mean

Answer: Option A

Solution (By JKSSB Mock Tests)

In a perfectly symmetric distribution, all three central measures coincide.

This question belongs to: Accountancy and Statistics Statistics

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The base year of the Wholesale Price Index (WPI) 2011-12 series was revised in:

A. 2019

B. 2017

C. 2015

D. 2020

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Correct Answer: Option B

Explanation:
The new WPI series with base 2011-12 was launched in 2017.

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Question #2

Which of the following mortality measures uses a standard population?

A. Crude Death Rate

B. Age-specific Death Rate

C. Standardized Death Rate

D. Infant Mortality Rate

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Correct Answer: Option C

Explanation:
Standardized death rate applies age-specific rates to a standard age distribution.

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Question #3

Which of the following best defines primary data?

A. Data that has been analyzed and interpreted by another researcher

B. Data obtained from previously published sources

C. Data collected through secondary sources like journals and reports

D. Data collected by an investigator for the first time for a specific purpose

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Correct Answer: Option D

Explanation:
Primary data is original data collected firsthand by the investigator specifically for the current research purpose, distinguishing it from secondary data which is pre-existing.

This question belongs to: Accountancy and Statistics Statistics

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