- #1
SavvyAA3
- 23
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I would very much appreciate if someone could explain the following:
- What is the use of the MSE (Mean Square Error) i.e. why do we use it?
I understand that MSE(t) = Var(t) + {E(t-&)}^2, but what does this tell us?
- Why/ How does E{A*Sx^2 +b*Sy^2} = a*Var + b*Var
(I am using ^ to denote 'powers' i.e. '^2' means sqaured)
- What is the E(-) operator, what is its use and what are its properties.
I would really, really appreciate help on this as I am having difficulties grasping these concepts of statistical theory.
Thanks
- What is the use of the MSE (Mean Square Error) i.e. why do we use it?
I understand that MSE(t) = Var(t) + {E(t-&)}^2, but what does this tell us?
- Why/ How does E{A*Sx^2 +b*Sy^2} = a*Var + b*Var
(I am using ^ to denote 'powers' i.e. '^2' means sqaured)
- What is the E(-) operator, what is its use and what are its properties.
I would really, really appreciate help on this as I am having difficulties grasping these concepts of statistical theory.
Thanks