Question

Arithmatic mean of 6,17,11,13,14 and x is 11.5.find x

Answer 1

$\blue{\huge{\boxed{\star\: Solution \: \star}}}$

◆Mean =Sum of all the observation/total number of observation

◆Mean=11.5 (Given)

◆Observations are 6,17,11,13,14 & x

◆
$\blue{put \: in \: the \: formula}$
◆6 + 17 + 11 + 13 + 14 + x/6 = 11.5

◆61 + x = 11.5 × 6

◆61 + x = 69

◆x = 69-61

◆x = 8
$\green{so \: the \: value \: of \: x \: is \: 8}$