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  • El Salvador hospitals overwhelmed by respiratory diseases
    SAN SALVADOR, El Salvador (AFP) -- Hospitals in El Salvador have been overwhelmed by an unexpected rise in respiratory diseases including pneumonia and dengue fever, health authorities said on Wednesday. The official said acute respiratory disease has shot up, totaling some 1.3 million cases.
THE VARIANCE PDF Print E-mail
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FREE LESSONS at Avalon Medical Laboratory ONLINE - STATISTICS
Friday, 11 September 2009 19:19

 

 

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VARIANCE. A meassure of DISPERSION. The expected square deviation of that variable from its expected value or mean. The variance of random variable X is typically designated as Var(X), or simply ?2 (pronounced "sigma squared").

 

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