설명Michelsonmorley-boxplot.svg	Boxplot representing A. Michelson's data on the speed of light (1882). It consists of five experiments, each made of 20 consecutive runs.
날짜	2006년 12월 28일
출처	자작
저자	User:Schutz
SVG 발전 InfoField	이 SVG 파일의 소스 코드 문법이 올바릅니다.  이 chart R(으)로 제작되었습니다.

This data is not from the Michelson-Morley experiment but from Michelson's measurement of the speed of light. See MICHELSON, A. A. (1882): Experimental determination of the velocity of light made at the United States Naval Academy, Annapolis. Astronomic Papers 1, pp. 109-145 U.S. Nautical Almanac Office, or S. M. Stigler (1977): Do robust estimators work with real data? Annals of Statistics 5, 1055–98. Experiment 3 has the smallest data spread, discarding 1:5 runs as outliers.

Boxplot representing A. Michelson's data on the speed of light (1882). It consists of five experiments, each made of 20 consecutive runs. Note that the oblique line is incorrect, probably due to a bug in the Mediawiki software/SVG converter. The graphic was created by User:Schutz for Wikipedia on 28 December 2006, using the R statistical project. The program that generated the graphic is given below; the data and the idea are from the R help page for the morley dataset (see help(morley)). The graph was exported in postscript format, converted to SVG using the postedit command, and the layout was slightly modified using Inkscape before upload.

 
  data(morley)
  morley$Expt <- factor(morley$Expt)
  morley$Run <- factor(morley$Run)
  attach(morley)

  postscript("Michelsonmorley-boxplot.ps", paper="special", height=6, width=6,
             horizontal=F)
  par(las=1)
  par(mar=c(5.1, 5.1, 2.1, 2.1))
  par(font=2)
  par(font.axis=2)
  boxplot(Speed ~ Expt, xlab = "Experiment No.", ylab="Speed of light (km/s minus 299,000)")
  abline(h=792.458, lty=3)
  dev.off()
  

Boxplot representing A. Michelson's data on the speed of light (1882). It consists of five experiments, each made of 20 consecutive runs.

The graphic was originally created by User:Schutz for Wikipedia on 28 December 2006, using the R statistical project. The program that generated the graphic is given below; the data and the idea are from the R help page for the morley dataset (see help(morley)). The graph was exported in PDF format, converted to SVG using Adobe Illustrator, and the layout was slightly modified using Vim before upload.

data(morley)
morley$Expt <- factor(morley$Expt)

pdf("Michelsonmorley-boxplot.pdf", height=6, width=6)
par(las=1, mar=c(5.1, 5.1, 2.1, 2.1))
boxplot(Speed ~ Expt, morley, xlab = "Experiment No.",
        ylab="Speed of light (km/s minus 299,000)")
abline(h=792.458, col="red")
text(3,792.458,"true\nspeed")
dev.off()

나는 이 작품의 저작권자로서, 이 작품을 퍼블릭 도메인으로 모두에게 공개합니다. 이 공개 선언은 전 세계적으로 유효합니다. 만약 저작권의 포기가 법률적으로 가능하지 않은 경우, 나는 이 작품을 법적으로 허용되는 한도 내에서 누구나 자유롭게 어떤 목적으로도 제한없이 사용할 수 있도록 허용합니다.

The creator and uploader also believes that this graphic is a trivial work which does not qualify for copyright.

• A. J. Weekes (1986) A Genstat Primer. London: Edward Arnold.