Displaying 3 results from an estimated 3 matches for "triceps".
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2010 May 13
1
What's data() for?
Hi there,
>library(faraway)
>pima
pregnant glucose diastolic triceps insulin bmi diabetes age test
1 6 148 72 35 0 33.6 0.627 50 1
2 1 85 66 29 0 26.6 0.351 31 0
>data(pima)
>pima
pregnant glucose diastolic triceps insulin bmi diabetes age test
1 6 148 72...
2007 Aug 20
1
Ask for functions to obtain partial R-square (squared partial correlation coefficients)
...ry clear explanations on partial and
semi-partial correlation:
http://www.psy.jhu.edu/~ashelton/courses/stats315/week2.pdf
In SAS, the options is PCORR2 and SCORR2.
For example(from http://www.ats.ucla.edu/stat/sas/examples/alsm/alsmsasch7.htm)
data ch7tab01;
input X1 X2 X3 Y;
label x1 = 'Triceps'
x2 = 'Thigh cir.'
x3 = 'Midarm cir.'
y = 'body fat';
cards;
19.5 43.1 29.1 11.9
24.7 49.8 28.2 22.8
30.7 51.9 37.0 18.7
29.8 54.3 31.1 20.1
19.1 42.2 30.9 12.9
25.6 53.9 23.7 21.7
31.4 58.5 27.6 27.1
27.9 52.1...
2005 Mar 08
1
coefficient of partial determination...partial r square [ redux]
If I'm not mistaken, partial R-squared is the R^2 of the quantities plotted
in a partial residual plot, so you can base the computation on that. Prof.
Fox's `car' package on CRAN has a function for creating those plots, but you
need to figure out the way to extract the quantities being plotted.
[In any case, the basic tools for doing such computations are all in R, and
it