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1x1
2010 Jul 30
3
Using R for Multiple Regression
...ying mathematical models to
solve biological problems. I have used a linear model to generate the test
data. When using this data I expect R to correctly identify the model but
that does not seem to be the case. I am certain that I am doing something
wrong but not able to figure it out.
Model:
Y = m1x1 + m2x2+ m3X3 + c
m1=5
m2=6
m3=0
c=2
Model Identified by R using lm(formula = y ~ x1 + x2 + x3)
(Intercept) 8.000e+01
x1 1.100e+01
x2 NA
x3 NA
The data I am using is as follows:
y x1 x2 x3
91 1 14 2
102 2 15 5
113 3 16 8
124 4 17 11
135 5 18 14
146 6 19...