The mode of the dataset: 5, 7, 7, 8, 9, 9, 9, 10 is: MCQ with Answer and Explanation

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The mode of the dataset: 5, 7, 7, 8, 9, 9, 9, 10 is:

A. 8

B. 9

C. 7

D. 10

Answer: Option B

Solution (By JKSSB Mock Tests)

The mode is the value that appears most frequently; here, 9 occurs three times, more than any other value, making it the mode.

This question belongs to: Accountancy and Statistics Statistics

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Practice More Statistics Questions

Question #1

Pre‑testing of a questionnaire means:

A. Trying out the draft questionnaire on a small group to detect flaws

B. Administering the final questionnaire to the sample

C. Printing the questionnaire

D. Designing the questionnaire

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Correct Answer: Option A

Explanation:
Pre‑testing (pilot study) helps identify ambiguous or difficult questions before the main survey.

This question belongs to: Accountancy and Statistics Statistics

Question #2

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

A. 2.5

B. 250,000

C. 100,000

D. 10,000

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Correct Answer: Option C

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

This question belongs to: Accountancy and Statistics Statistics

Question #3

Combined mean formula is essential when:

A. All groups have the same size

B. Data is qualitative

C. Merging means from groups of different sizes

D. Calculating mode

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Correct Answer: Option C

Explanation:
Combined mean = (n₁x̄₁ + n₂x̄₂) / (n₁ + n₂) weights each group's mean by its size, providing the correct overall mean when aggregating subgroup statistics.

This question belongs to: Accountancy and Statistics Statistics

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