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01-Applied Mathematics & Information Sciences
An International Journal
               
 
 
 
 
 
 
 
 
 
 
 

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Volumes > Volume 9 > No. 1

 
   

A Refinement of Grüss Inequality via Cauchy-Schwarz’s Inequality for Discrete Random Variables

PP: 39-45
Author(s)
Nicuşor Minculete, Augusta Rațiu, Josip Pečarić,
Abstract
If X and Y are discrete random variables in finite case, then using the inequality of Cauchy-Schwarz, we will obtain another inequality expressed by the variance and covariance. The aim of this paper is to obtain a new refinement of discrete version of Gr¨uss inequality. In the final we show that we can structure the set of random variables with equal probabilities as a Hilbert space and as a seminormed vector space.

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