Question

Find the mean of the given data if the mean is 4.5 given data is 5, 7, 7, 8, x, 5,4,3,1,2



Pls help

Answer 1

the ans is (5 +14+8+x+5+4+3+1+2)÷10


4.1+x=4.5
x=4.5-4.1
x=0.4

Answer 2

given data 5 7 7 8 x 5 4 3 2 1

mean =4.5

mean (as per formula) =x+5

now equating the above statements as the left hand sides are equal

x+5=4.5

x=4.5-5

=x=-0.5