Researchers studied the development of a fly (Drosophila subobscura) that had been accidentally introduced from the Old World into North America around 1980.
A data frame with 21 observations on the following 8 variables.
a factor with levels
average wing size (10^3 x log mm) of female flies on log scale
standard error of wing size (10^3 x log mm) of female flies on log scale
average wing size (10^3 x log mm) of male flies on log scale
standard error of wing size (10^3 x log mm) of male flies on log scale
average basal length to wing size ratios of female flies
standard error of average basal length to wing size ratio of female flies
Ramsey, F.L. and Schafer, D.W. (2002). The Statistical Sleuth: A Course in Methods of Data Analysis (2nd ed), Duxbury.
Huey, R.B., Gilchrist, G.W., Carlson, M.L., Berrigan, D. and Serra, L. (2000). Rapid Evolution of a Geographic Cline in Size in an Introduced Fly, Science 287(5451): 308–309.
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