3
Mathematical Expectation
Prerequisites
Before you start reading this unit, you should:
- Be able to differentiate between discrete and continuous random variables
- Be familiar with pmf and pdf
- Calculate marginal density of random variables
Learning Objectives
After going through this unit, you would be able to
- Understand the expectation, variance, conditional mean, Chebychev’s theorem, moments, moment generating function, and characteristic function
- Calculate expectation, variance, conditional mean, given joint density functions of X and Y
- Apply Chebychev’s theorem to a random variable with some mean and variance
INTRODUCTION
Consider for instance, a salesman’s average monthly income. This average may not be equal to any of his monthly pay. ...
Get Probability, Statistics and Random Processes now with O’Reilly online learning.
O’Reilly members experience live online training, plus books, videos, and digital content from 200+ publishers.