Expectations and Moments of Random Variables

  • Ron C. Mittelhammer


The definition of the expectation of a random variable can be motivated both by the concept of a weighted average and through the use of the physics concept of center of gravity, or the balancing point of a distribution of weights. We first examine the case of a discrete random variable and look at a problem involving the balancing-point concept.


Probability Density Function Conditional Expectation Sweet Cherry Moment Generate Function Joint Moment 
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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  • Ron C. Mittelhammer
    • 1
  1. 1.School of Economic SciencesWashington State UniversityPullmanUSA

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