Question

Consider the following data: x −2 −1 0 1 2 P(X=x) 0.1 0.1 0.2 0.2 0.4 Step 3 of 5 : Find the standard deviation. Round your answer to one decimal place.

Answer 1

The answer is the expected value is - 2. The equation for expected value is the sum of the values times their probabilities.