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Robust Line Fitting
Usage
line(x, y)
coefficients(tukeyline.obj)
residuals(tukeyline.obj)
fitted.values(tukeyline.obj)
print(tukeyline.obj)
Arguments
x,y
|
the arguments can be any way of specifying x-y pairs.
|
Description
This function fits a line robustly as recommended in John Tukey's
book Exploratory Data Analysis.
Value
An object of class tukeyline
. Methods are available
for the generic functions coefficients
, residuals
,
fitted.values
and print
.
References
Tukey, J. W. (1977).
Exploratory Data Analysis,
Reading Massachusetts: Addison-Wesley.
See Also
lm
.
Examples
library(eda)
data(cars)
plot(cars)
z <- line(cars)
abline(coef(z))