Question

if the mean of 16,14,x,23,20 is 18, find the value of x,

Answer 1

$(16 + 14 + x + 23 + 20 )\div 5 = 18$
(73 + x)/5= 18
73 + x = 90
x= 90-73 =17

Answer 2

mean =
sum of observation / total observation

16 + 14 + x +23 + 20 / 5 = 18

73 +x = 90

x = 90 -73
x = 17

mean is 17
x = 17