A set of values has mean 20. If each value is multiplied by 2 and then 5 is added, the new mean is: MCQ with Answer and Explanation

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A set of values has mean 20. If each value is multiplied by 2 and then 5 is added, the new mean is:

A. 40

B. 25

C. 50

D. 45

Answer: Option D

Solution (By JKSSB Mock Tests)

New mean = 2 × 20 + 5 = 45.

This question belongs to: Accountancy and Statistics Statistics

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A census is conducted in India under the:

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C. Census Act, 1948

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Correct Answer: Option C

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Correct Answer: Option B

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Secondary data is readily available from existing sources, significantly reducing the time, effort, and financial resources required for data collection compared to gathering primary data.

This question belongs to: Accountancy and Statistics Statistics

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Pre-testing of a questionnaire refers to:

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