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    I spend alsmost all day sreaching the answer but I still do not have it. SO
    Ex=m*n=963,828*25=24095,7
    m - mean
    n - sample size
    Ex^2=24991420,5
    (I'm analyzing exaple, and I do not get how they get this number, because 24095,7^2 is NOT 249991420,5
    So how to get it? :confused:
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    (Original post by Vasare)
    I spend alsmost all day sreaching the answer but I still do not have it. SO
    Ex=m*n=963,828*25=24095,7
    m - mean
    n - sample size
    Ex^2=24991420,5
    (I'm analyzing exaple, and I do not get how they get this number, because 24095,7^2 is NOT 249991420,5
    So how to get it? :confused:
    (I assume when you write E you mean \sum. Also this is the wrong forum, there's a maths help forum elsewhere.)

    Ex^2 is not (Ex)^2. It means \displaystyle\sum\limits_{i=0}^{  25} {x_i}^2
 
 
 
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