If the variance of a dataset is 16, the standard deviation is: MCQ with Answer and Explanation

If the variance of a dataset is 16, the standard deviation is:

A. 4

B. 8

C. 256

D. 2

Answer: Option A

SD = √variance = 4.

This question belongs to: Accountancy and Statistics Statistics

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Question #1 Report Error

The sum of absolute deviations is minimized by:

A. Geometric mean

B. Mode

C. Mean

D. Median

Correct Answer: Option D

Explanation:
Median minimizes Σ |x - M|.

This question belongs to: Accountancy and Statistics Statistics

Question #2 Report Error

According to Census 2011, the population density of India is:

A. 425 persons/sq km

B. 325 persons/sq km

C. 500 persons/sq km

D. 382 persons/sq km

Correct Answer: Option D

Explanation:
The density was 382 persons per square kilometer in 2011.

This question belongs to: Accountancy and Statistics Statistics

Question #3 Report Error

If (AB) = 0, the attributes A and B are:

A. Complete disassociation

B. Randomly associated

C. Complete positive association

D. Independent

Correct Answer: Option A

Explanation:
(AB)=0 means no object possesses both A and B, indicating perfect negative association (complete disassociation).

This question belongs to: Accountancy and Statistics Statistics