el cuarteto de Anscombe

cuarteto.png

el cuarteto de Anscombe

# 1
anscombe

help(anscombe)

# Tufte, Edward R. (1989) The Visual Display of Quantitative Information, 13-14.  Graphics Press.
#
# Anscombe, Francis J. (1973) Graphs in statistical analysis. American Statistician, 27, 17-21.
#
# http://en.wikipedia.org/wiki/Anscombe%27s_quartet

summary(anscombe)

# 2 
attach(anscombe)

par(mfrow=c(2,2))
 
plot(x1, y1, xlim=c(min(x1,x2,x3,x4),max(x1,x2,x3,x4)), ylim=c(min(y1,y2,y3,y4),max(y1,y2,y3,y4)))
abline(lm(y1~x1))
 
plot(x2, y2, xlim=c(min(x1,x2,x3,x4),max(x1,x2,x3,x4)), ylim=c(min(y1,y2,y3,y4),max(y1,y2,y3,y4)))
abline(lm(y2~x2))
 
plot(x3, y3, xlim=c(min(x1,x2,x3,x4),max(x1,x2,x3,x4)), ylim=c(min(y1,y2,y3,y4),max(y1,y2,y3,y4)))
abline(lm(y3~x3))
 
plot(x4, y4, xlim=c(min(x1,x2,x3,x4),max(x1,x2,x3,x4)), ylim=c(min(y1,y2,y3,y4),max(y1,y2,y3,y4)))
abline(lm(y4~x4))

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