Question

2,3,4,x+2,x+3,4,5,8,median=20

Answer 1

n=8 ,n is even so the formula is (n/2th observation +(n/2+1)th observation)/2
=(8/2th obsv+8/2+1th obsv)/2
=(4th obsv+5th obsv)/2
=(x+2+x+3)/2
20=(x+2+x+3)/2
20*2=2x+5
40/2=x+5
20=x+5
x=20-5
x=15
x+2=15+2=17
x+3=15+3=18

Answer 2

So it is helful for you i hope