What is secondary data? MCQ with Answer and Explanation

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What is secondary data?

A. Data that already exists and is used by someone else

B. Data collected through observation

C. Data collected by the user for the first time

D. Data collected through experiments

Answer: Option A

Solution (By JKSSB Mock Tests)

Secondary data is data that has already been collected by someone else and is available for use.

This question belongs to: Accountancy and Statistics Statistics

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Question #1

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In probability, the sample space for drawing one card from a standard deck has how many outcomes?

A. 4

B. 26

C. 13

D. 52

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Correct Answer: Option D

Explanation:
A standard deck has 52 distinct cards (4 suits × 13 ranks), so the sample space for a single draw contains 52 equally likely elementary outcomes.

This question belongs to: Accountancy and Statistics Statistics

Question #2

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For a dataset with values 2, 4, 8, 16, 32, the geometric mean is:

A. 8

B. 10

C. 6

D. 12

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Correct Answer: Option A

Explanation:
Product = 32768. (32768)^(1/5) = 8 (since 8^5 = 32768).

This question belongs to: Accountancy and Statistics Statistics

Question #3

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The harmonic mean of speeds 30 km/h and 60 km/h for equal distances is:

A. 45 km/h

B. 50 km/h

C. 55 km/h

D. 40 km/h

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Correct Answer: Option D

Explanation:
For equal distances, average speed = harmonic mean = 2 / (1/30 + 1/60) = 2 / (2/60 + 1/60) = 2 / (3/60) = 2 × 20 = 40 km/h. Arithmetic mean (45) would be incorrect here.

This question belongs to: Accountancy and Statistics Statistics

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