In attributes, if (AB)=30, (A)=40, (B)=50, N=100, the expected frequency under independence is: MCQ with Answer and Explanation

Question

Share Report Error

In attributes, if (AB)=30, (A)=40, (B)=50, N=100, the expected frequency under independence is:

A. 25

B. 30

C. 15

D. 20

Answer: Option D

Solution (By JKSSB Mock Tests)

Expected (AB) = (40×50)/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 a die is rolled, the sample space is:

A. {0,1,2,3,4,5,6}

B. {2,4,6}

C. {1,2,3,4,5,6}

D. {1,2,3,4,5}

View Answer & Solution Discuss

Get Complete Subject PDF for Accountancy and Statistics

Correct Answer: Option C

Explanation:
A fair die has six possible outcomes: 1,2,3,4,5,6.

This question belongs to: Accountancy and Statistics Statistics

Question #2

Which of the following index numbers does NOT require weights?

A. Fisher index

B. Laspeyres index

C. Simple aggregative index

D. Paasche index

View Answer & Solution Discuss

Get Complete Subject PDF for Accountancy and Statistics

Correct Answer: Option C

Explanation:
Simple aggregative treats all items equally; others are weighted.

This question belongs to: Accountancy and Statistics Statistics

Question #3

Harmonic mean is used to average speeds when:

A. Distances traveled are equal

B. Times traveled are equal

C. Data is qualitative

D. Speeds are constant

View Answer & Solution Discuss

Get Complete Subject PDF for Accountancy and Statistics

Correct Answer: Option A

Explanation:
For equal distances, average speed = total distance / total time = harmonic mean of speeds; arithmetic mean would overestimate if speeds vary.

This question belongs to: Accountancy and Statistics Statistics

Explore All Statistics MCQs