In a set of numbers, if the geometric mean is zero, then: MCQ with Answer and Explanation

In a set of numbers, if the geometric mean is zero, then:

A. All numbers are zero

B. The median is zero

C. At least one number is zero

D. The arithmetic mean is also zero

Answer: Option C

GM = 0 if any value is zero.

This question belongs to: Accountancy and Statistics Statistics

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Question #1 Report Error

The curve obtained by joining the midpoints of histogram bars is:

A. Pie chart

B. Bar chart

C. Frequency polygon

D. Ogive

Correct Answer: Option C

Explanation:
Frequency polygon connects class midpoints with lines.

This question belongs to: Accountancy and Statistics Statistics

Question #2 Report Error

The main advantage of a questionnaire is:

A. Suitable for illiterates

B. High cost

C. Always high response rate

D. Can be administered to a large number of people at low cost

Correct Answer: Option D

Explanation:
Questionnaires can cover a wide geographic area at minimal expense.

This question belongs to: Accountancy and Statistics Statistics

Question #3 Report Error

Which data collection method has the lowest response rate generally?

A. Telephone interview

B. Direct personal interview

C. Schedule through enumerator

D. Mailed questionnaire

Correct Answer: Option D

Explanation:
Mailed questionnaires suffer from high non-response as respondents often ignore or forget to return them.

This question belongs to: Accountancy and Statistics Statistics