1. Find value of X where Arithmetic mean =3.5 for data 2,3,X,5AM
=2+3+X+543.5=2+3+X+543.5×4=10+XX=14-10X=4
2. Find value of X where Arithmetic mean=5 for data 5,4,6,X,7,5Solution:AM
=5+4+6+x+7+565=5+4+6+x+7+565×6=27+xx=30-27x=3
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