Question

28
$2y8x + 8$
​

Answer 1

Observations= 5,8,11,16+x,18+x,28,31,40

total observations(n)=8(even)

median= 18

we know formula for calculating median for even no= ((n/2+1)+(n/2))/2

18= ((8/2+1)+(8/2))/2

18=((5)th+(4)th observations)/2

18=((18+x)+(16+x))/2

18=(18+x+16+x)/2

18=(34+2x)/2

18 X 2=34+2x

36=34+2x

36-34=2x

2=2x

2/2=x

which implies,,, x=1

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