Question

average of 3,4,4,9 X 11 and 3 is 17 then find x​

Answer 1

71

Step-by-step explanation:

average of the observations =

$\frac{3 + 4 + 4 + 9 + x + 11}{6} = \frac{(sum \: of \: all \: observations)}{no. \: of \: obsevations} \\ \frac{31 + x}{6} = 17(given) \\ = 31 + x = 17 \times 6 \\ = 102 - 31 \\ x = 71$