out =
morley ()
¶Michelson Speed of Light Data
A classical data of Michelson (but not this one with Morley) on measurements done in 1879 on the speed of light. The data consists of five experiments, each consisting of 20 consecutive ‘runs’. The response is the speed of light measurement, suitably coded (km/sec, with 299000 subtracted).
Expt
The experiment number, from 1 to 5.
Run
The run number within each experiment.
Speed
Speed-of-light measurement.
The data is here viewed as a randomized block experiment with experiment
and run
as the factors. run
may also be considered a quantitative
variate to account for linear (or polynomial) changes in the measurement over
the course of a single experiment.
A. J. Weekes (1986). A Genstat Primer. London: Edward Arnold.
S. M. Stigler (1977). Do robust estimators work with real data? Annals of Statistics 5, 1055–1098. (See Table 6.)
A. A. Michelson (1882). Experimental determination of the velocity of light made at the United States Naval Academy, Annapolis. Astronomic Papers, 1, 135–8. U.S. Nautical Almanac Office. (See Table 24.).
t = tblish.dataset.morley; # TODO: Port to Octave