For a dataset of 10 numbers, Σx = 500 and Σx² = 26000. The coefficient of variation (%) is: MCQ with Answer and Explanation

Question

Share Report Error

For a dataset of 10 numbers, Σx = 500 and Σx² = 26000. The coefficient of variation (%) is:

A. 20

B. 25

C. 10

D. 15

Answer: Option A

Solution (By JKSSB Mock Tests)

Mean=50. Variance = (26000/10) - 50² = 2600-2500=100. SD=10. CV = (10/50)×100 = 20%.

This question belongs to: Accountancy and Statistics Statistics

Request complete Subject PDF

Discuss this Question (0)

No comments yet. Be the first to start the discussion!

Practice More Statistics Questions

Question #1

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

A. 2

B. 4

C. 256

D. 8

View Answer & Solution Discuss

Get Complete Subject PDF for Accountancy and Statistics

Correct Answer: Option B

Explanation:
SD = √variance = 4.

This question belongs to: Accountancy and Statistics Statistics

Question #2

The harmonic mean is most appropriate for:

A. Average speed when distance is fixed

B. Average price

C. Average height

D. Average growth rate

View Answer & Solution Discuss

Get Complete Subject PDF for Accountancy and Statistics

Correct Answer: Option A

Explanation:
HM is used for rates when the numerator is constant.

This question belongs to: Accountancy and Statistics Statistics

Question #3

If P(A)=0.4, P(B)=0.5, and A and B are independent, then P(A' ∩ B') equals:

A. 0.2

B. 0.3

C. 0.1

D. 0.9

View Answer & Solution Discuss

Get Complete Subject PDF for Accountancy and Statistics

Correct Answer: Option B

Explanation:
P(A')=0.6, P(B')=0.5, independence ⇒ P(A'∩B') = 0.6 × 0.5 = 0.3.

This question belongs to: Accountancy and Statistics Statistics

Explore All Statistics MCQs