Question

Consider the following Data: x -4,-3,-2,-1,0 P(X=×) 0.2,0.1,0.2,0.1,0.4 Find the expected value E(X). Round your answer to one decimal palce.

Answer 1

The given data as;

Expected value define as the summation of xP(x)

So;

So, expected value is the summation of xP(x);

Expected value = Summation of xp(x)

= -0.8 + (-0.3) + (-0.4) + (-0.1) + 0

= -0.8 - 0.3 - 0.4 - 0.1 + 0

= -1.6

Answer ; Expected value = -1.6

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