Question

find the average of 18, 30, 9.​

Answer 1

$\large\sf\underline{\underline{\red{average \: = \frac{sum \: of \: all \: observations}{total \: number \: of \: observation} }}}$

$\large\sf\underline{\underline{\green{ \frac{18 + 3 + 9}{3} = \frac{57}{3} }}}$

$\huge\sf\underline{\underline{\pink{Average = 19}}}$

Answer 2

Answer:

Add 18,30,9 =57

then devide 57 with 3

and you will get the number