Free Notes for Class 5–12 | CBSE | 24x7 Access
Student School Teacher Help
Home Schools Pricing
Log in Get Started
Class 9 Mathematics Medium Mcq English Medium

A set of 7 values has mean 26. If a new value 31 is added, what is the new mean?

Question
A set of 7 values has mean 26. If a new value 31 is added, what is the new mean?
27.00
31
26
26.62
Answer
26.62
Detailed Explanation
Find the old total as n times the old mean, add the new value, then divide by n+1. — Examisthan.com
Related Questions
In a 100% stacked bar, categories are 40%, 30%, and 70%. What percentage is the total? Mathematics · How Quantities Combine: Understanding Data - New Edition If every weight in a weighted average is multiplied by 5, what happens to the weighted average? Mathematics · How Quantities Combine: Understanding Data - New Edition If every weight in a weighted average is multiplied by 4, what happens to the weighted average? Mathematics · How Quantities Combine: Understanding Data - New Edition If every weight in a weighted average is multiplied by 12, what happens to the weighted average? Mathematics · How Quantities Combine: Understanding Data - New Edition

Want the full Mathematics question bank?

Log in for free to unlock practice tests, notes, and an AI tutor for Class 9.

Get started free