Mean or Expected Value and Standard Deviation · Exercise 2

Find the expected value from the expected value table.

$$\begin{array}{ccc}\text{x}& \text{P(x)}& \text{x*P(x)}\\ \text{2}& \text{0.1}& \text{2(0.1) = 0.2}\\ \text{4}& \text{0.3}& \text{4(0.3) = 1.2}\\ \text{6}& \text{0.4}& \text{6(0.4) = 2.4}\\ \text{8}& \text{0.2}& \text{8(0.2) = 1.6}\end{array}$$

OpenStax, Introductory Statistics 2e · §4.2 Mean or Expected Value and Standard Deviation · Exercise 2