This chart was created with R.

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Summary

Code

This is the code used to generate the plot. It could have been done more efficiently, but this way is more self-explanatory.

SpacingEstimate<-function (x) {
A1<-1-exp(-2*x)
A2<-1-exp(-4*x)
Z<-(A1)*(A2-A1)*(1-A2)
return(log(Z))
}

Likelihood<-function (x) {
A1<-x*exp(-2*x)
A2<-x*exp(-4*x)
Z<-A1*A2
return(log(Z))
}

x<-seq(0,1,.01)

plot(x,SpacingEstimate(x),main="Comparison of Estimator Values", type="l", col="blue", xaxp=c(0,1,10), lwd=2, ylab="Estimator values")
points(x, Likelihood(x), col="dark green", type="l", lwd=2)

arrows(.4, -7, .26, -8.1)
arrows(.56, -7.45, .33, -8.09)

text (x=.463, y = -6.7, labels = "Maximum Spacing Estimate:",col="red")
text (x=.45, y = -7.0, labels=expression(frac(ln(.6),-2)),col="red")

text (x=.6, y = -7.3, labels = "Maximum Likelihood Estimate:", col="purple")
text (x=.6, y = -7.6, labels=expression(frac(1,3)), col="purple")

abline(v=(log(.6)/-2), col="red")
abline(v=(1/3), col="purple")

legend ("topright", legend=c("Maximum Spacing", "Maximum Likelihood"), col = c("blue", "dark green"), lwd=2)

Licensing

I, the copyright holder of this work, hereby publish it under the following license:

This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication.

The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission. http://creativecommons.org/publicdomain/zero/1.0/deed.enCC0Creative Commons Zero, Public Domain Dedicationfalsefalse