Simple linear regression: Difference between revisions

Revision as of 01:46, 21 April 2008

Revision as of 01:49, 21 April 2008

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: <math> \hat{a} = \bar{y} - \hat{b} \bar{x} </math>

Ordinary Leastleast Squaressquares produces the following features:

# The line goes through the point <math> (\bar{X},\bar{Y}) </math>.

# The sum of the residuals is equal to zero.

# The linear combination of the residuals in which the coefficients are the ''x''-values is equal to zero.

# The estimates are unbiased.

== Alternative formulas for the slope coefficient ==