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Class 9 Mathematics Medium Mcq English Medium

A set of 8 values has mean 21. If a new value 26 is added, what is the new mean?

Question
A set of 8 values has mean 21. If a new value 26 is added, what is the new mean?
21.56
22.00
21
26
Answer
21.56
Detailed Explanation
Find the old total as n times the old mean, add the new value, then divide by n+1. — Examisthan.com
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