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Material Type: Notes; Professor: Wilcock; Class: Introductory Statistics; Subject: Statistics; University: Messiah College; Term: Unknown 1989;
Typology: Study notes
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Brief Summary of Regression and Correlation
General model: y = 0 + 1 x + "
Summary values we will use:
Sxx =
(x x)^2 n Syy =
(y y)^2 n Sxy =
((x x)(y y)) n From these we can get our estimates:
^ 1 = b 1 = Sxy Sxx ^ 0 = b 0 = y b 1 x
To calculate the correlation between the variables:
r = pSxy SxxSyy
Interpreting the correlation: