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Expectation from a pmf

EasyRandom VariablesExpected Value~2m

A random variable takes values 0,1,2,30,1,2,3 with probabilities 0.1,0.2,0.4,0.30.1, 0.2, 0.4, 0.3. What is its expected value?

Show hints (2)+
  1. Weight each value by its probability.
  2. Sum $x\cdot p(x)$.

Answer

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1.9

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Asked at: Optiver, IMC

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