i am having some trouble with the following question if someone could help me out it would be greatly appreciated! 2 2 E E Xij i=1 J=1 Sorry if its tough to understand. I just dont get how to do it.
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First of all replace j with the two values 1 and 2, then replace i with 1 and 2. $\displaystyle \sum_{i=1}^2\sum_{j=1}^2x_{ij}=\sum_{i=1}^2(x_{i1} +x_{i2})=x_{11}+x_{12}+x_{21}+x_{22}$
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