ST259 Chapter Notes - Chapter 6: Pci Express
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Astatistic isanyquantity whosevalue can be calculatedfrom sampledata priorto obtaining data thereis uncertainty as towhat valueofany particular statisticwillresulttherefore a statistic is a random variableandwill bedenoted by an uppercase letter a lowercaseletter is usedto represent thecalculated or observed value of thestatistic. Xm are saidtoform a simple random sample of size n if. Thefollowingcharacteristicsof an experimentmustbespecified thestatisticofinterest thepopulation distribution ex normal n 100and o 15 the sample size n thenumberofreplications. Xn be a randomsamplefroma distribution withmeanvalue n andstandard. Xn thesampletotal e to nu vio no zand o ino. Am be a randomsample from a normaldistribution withmean n and standarddeviation 0 thenforanyn e is normally distributed with mean n and standard deviationmrn as is to with mean nmandstandard deviationjno. Thetet xi nz am be a randomsamplefrom adistribution withmean u and variance 02 then x thestandardizedversionsof e andto havethestandardnormal in thelimit as n distribution thatis fins p. I where z is a standardnormal rv as an alternativetosayingthatthestandardized versions of.
