Wikipedia:Reference desk/Archives/Mathematics/2011 August 30
| Mathematics desk | ||
|---|---|---|
| < August 29 | << Jul | August | Sep >> | August 31 > |
| Welcome to the Wikipedia Mathematics Reference Desk Archives |
|---|
| The page you are currently viewing is an archive page. While you can leave answers for any questions shown below, please ask new questions on one of the current reference desk pages. |
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)