If the arithmetic mean of 10 numbers is 40 and the mean of the same numbers after subtracting a constant from each is 25, the constant subtracted was: MCQ with Answer and Explanation

Question

If the arithmetic mean of 10 numbers is 40 and the mean of the same numbers after subtracting a constant from each is 25, the constant subtracted was:

A. 15

B. 20

C. 25

D. 10

Answer: Option A

Solution (By JKSSB Mock Tests)

New mean = old mean - constant ⇒ 25 = 40 - k ⇒ k = 15.

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

Share Report

Cost of Living Index numbers are also known as:

A. Wholesale price index

B. Sensex

C. Index of industrial production

D. Consumer price index

View Answer & Solution Discuss

Get Complete Subject PDF for Accountancy and Statistics

Correct Answer: Option D

Explanation:
Cost of Living Index measures changes in retail prices of goods and services consumed by households, essentially the Consumer Price Index.

This question belongs to: Accountancy and Statistics Statistics