Which of the following means is most appropriate to find the average rate of population growth over a decade? MCQ with Answer and Explanation

Which of the following means is most appropriate to find the average rate of population growth over a decade?

A. Geometric Mean

B. Arithmetic Mean

C. Harmonic Mean

D. Weighted Mean

Answer: Option A

Geometric mean is the best measure for averaging ratios, percentages, and compound growth rates.

This question belongs to: Accountancy and Statistics Statistics

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Question #1 Report Error

In questionnaire design, which sequence of questions is most recommended?

A. Difficult and personal questions first, easy questions later

B. Random order to avoid bias

C. Easy and general questions first, then difficult and sensitive questions

D. Demographic questions at the very beginning

Correct Answer: Option C

Explanation:
Starting with easy, non-threatening questions builds rapport; sensitive questions are placed at the end to reduce dropouts.

This question belongs to: Accountancy and Statistics Statistics

Question #2 Report Error

A box contains 5 defective and 15 non-defective items. Two items are drawn. The probability that both are non-defective is:

A. 15/20 × 14/19 = 21/38

B. (15/20)²

C. 21/38

D. 1 - (5/20)²

Correct Answer: Option A

Explanation:
P(both non-defective) = (15/20)×(14/19) = 210/380 = 21/38.

This question belongs to: Accountancy and Statistics Statistics

Question #3 Report Error

The crude birth rate in India has declined primarily due to:

A. Increase in migration

B. Family planning and socio-economic development

C. Decrease in female population

D. Increase in death rate

Correct Answer: Option B

Explanation:
Awareness, contraception, and rising education have reduced birth rates.

This question belongs to: Accountancy and Statistics Statistics