In a frequency distribution, if the class marks are 5, 15, 25, 35, the class width is: MCQ with Answer and Explanation

In a frequency distribution, if the class marks are 5, 15, 25, 35, the class width is:

A. 10

B. 15

C. 5

D. 20

Answer: Option A

Difference between successive class marks = 15-5 = 10, so width = 10.

This question belongs to: Accountancy and Statistics Statistics

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

Question #1 Report Error

The method of collecting primary data where the informant is contacted through telephone is called:

A. Telephonic interview

B. Indirect oral investigation

C. Direct personal interview

D. Mailed questionnaire

Correct Answer: Option A

Explanation:
Telephonic interview involves asking questions over the phone.

This question belongs to: Accountancy and Statistics Statistics

Question #2 Report Error

Which of the following is true about the mode?

A. Always unique

B. Always less than mean

C. Can be more than one

D. Always equal to median

Correct Answer: Option C

Explanation:
A distribution can be bimodal or multimodal.

This question belongs to: Accountancy and Statistics Statistics

Question #3 Report Error

The harmonic mean of 1, 2, and 4 is:

A. 3/7

B. 12/7

C. 7/3

D. 7/12

Correct Answer: Option B

Explanation:
HM = 3 / (1 + 1/2 + 1/4) = 3 / 1.75 = 12/7.

This question belongs to: Accountancy and Statistics Statistics