Wikipedia:Reference desk/Archives/Mathematics/2011 August 30
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August 30[edit]
Expected sum of random variables[edit]
Is the expected sum of a number of random variables equal to the sum of each of those random variable's expected values? I know this is the case for certain distributions (e.g. Sum of normally distributed random variables), but when is this not the case? --Iae (talk) 23:23, 30 August 2011 (UTC)
- See Expected value#Linearity.--RDBury (talk) 23:41, 30 August 2011 (UTC)
- Thanks! Looks like I was just scanning for the wrong word. --Iae (talk) 23:47, 30 August 2011 (UTC)