Question

Determine qual o valor da média aritmética do seguinte conjunto de dados CD = {5, 2, 8, 1, 9, 12, 10, 2}. (1 ponto) *
5,543
3,215
7,215
6,125​

Answer 1

$CD=\{5,2,8,1,9,12,10,2\}\ \to\ n=8$

$\boxed{\bar{X}=\dfrac{1}{n}\sum\limits^{n}_{i=1}{x_i}}}$

$\bar{X}=\dfrac{1}{8}\bigg(5+2+8+1+9+12+10+2\bigg)\ \therefore$

$\bar{X}=\dfrac{49}{8}\ \therefore\ \boxed{\bar{X}=6.125}$