Derivation of partitioning of total variability

[mcguiry03]

it is a sum of squares in anova(analysis of data). how can i derive this equation?tnx..

 

[viraltux]

$-\bar{Y}_{i.} + \bar{Y}_{i.} = 0$

So you can place that anywhere and you change nothing, it is a common trick.

 

[mcguiry03]

$-\bar{Y}_{i.} + \bar{Y}_{i.} = 0$

So you can place that anywhere and you change nothing, it is a common trick.

what is my working equation so i can arrive at the sum of squares identity?