Question 1 - Page 105 - Tinkering with Mean - Chapter 5 Class 8 - Tales by Dots and Lines (Ganita Prakash II)

Last updated at July 17, 2026 by

What happens to the mean if a value equal to the mean is included - Tinkering with Mean

part 2 - Question 1 - Page 105 - Tinkering with Mean - Chapter 5 Class 8 - Tales by Dots and Lines (Ganita Prakash II) - Class 8 (Ganita Prakash - 1, 2 & Old NCERT)

Remove Ads Share on WhatsApp

Transcript

Question 1 - Page 105 What happens to the mean if a value equal to the mean is included or removed? If you add or remove a number that is exactly equal to the mean, the mean stays the same. Reason Let's use the fair-share idea. Imagine 3 friends share 15 chocolates equally; their "fair share" (mean) is 5 chocolates each. If a new friend joins the group and brings exactly 5 chocolates with them, nobody has to give or take any chocolates to make things equal. The fair share remains exactly 5! Let’s look at dot plot Original Dot plot New Number 11 (= Mean) is added Mean stays the same

CA Maninder Singh's photo - Co-founder, Teachoo

Made by

CA Maninder Singh

CA Maninder Singh is a Chartered Accountant with 16+ years of practical experience and 20+ years of teaching experience. At Teachoo, he simplifies Accounts, Tax and GST with step-by-step examples so students can apply concepts confidently in exams and real life.

For an uninterrupted learning experience, students can use Teachoo Black to remove ads and focus better.