Proof of a Series of Partial Sum Inequality with Eξ~2≥(Eξ)~2
Luo Jing · Journal of Sichuan University of Science & Engineering · 2012
By the theory of probability of an inequality Eξ2≥(Eξ)2,a series of the series and inequality can be proved or derived.The key to the problem is according to its own characteristics to flexibly construct a proper discreted random variable distribution.The method has a certain procedural and stronger maneuverability.