A data set from Oehlert (2000) \emph{A First Course in Design and Analysis of Experiments}, New York: W. H. Freeman. Data originally from Paskova, T. and C.~Meyer (1997). ``Low-cycle fatigue of plain and fiber-reinforced concrete.''{\em ACI Materials Journal\/}~{\em 94}, 273--285. Compressive strength of concrete cubes with 0, .25, .5, .75, or 1% polypropylene fibers. Columns are treatment number and strength (in ksi).