Hp 50g Graphing Calculator Manual do Utilizador descarregar pdf (Página 618)

We get the, so-called, normal equations:

This is a system of linear equations with a and b as the unknowns, which can

be solved using the linear equation features of the calculator. There is,

however, no need to bother with these calculations because you can use the 3.

Fit Data … option in the ‚Ù menu as presented earlier.

Additional equations for linear regression

The summary statistics such as Σx, Σx

, etc., can be used to define the following

Θ a,b are unbiased estimators

Θ The Gauss-Markov theorem of probability indicates that among all

unbiased estimators for Α and Β, the least-square estimators (a,b) are the

most efficient.

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Hp 50g Graphing Calculator Manual do Utilizador Página 618