EVOLUTION-MANAGER
Edit File: Oats.html
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><title>R: Split-plot Experiment on Varieties of Oats</title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <link rel="stylesheet" type="text/css" href="R.css" /> </head><body> <table width="100%" summary="page for Oats {nlme}"><tr><td>Oats {nlme}</td><td style="text-align: right;">R Documentation</td></tr></table> <h2>Split-plot Experiment on Varieties of Oats</h2> <h3>Description</h3> <p>The <code>Oats</code> data frame has 72 rows and 4 columns. </p> <h3>Format</h3> <p>This data frame contains the following columns: </p> <dl> <dt>Block</dt><dd> <p>an ordered factor with levels <code>VI</code> < <code>V</code> < <code>III</code> < <code>IV</code> < <code>II</code> < <code>I</code> </p> </dd> <dt>Variety</dt><dd> <p>a factor with levels <code>Golden Rain</code> <code>Marvellous</code> <code>Victory</code> </p> </dd> <dt>nitro</dt><dd> <p>a numeric vector </p> </dd> <dt>yield</dt><dd> <p>a numeric vector </p> </dd> </dl> <h3>Details</h3> <p>These data have been introduced by Yates (1935) as an example of a split-plot design. The treatment structure used in the experiment was a <i>3 x 4</i> full factorial, with three varieties of oats and four concentrations of nitrogen. The experimental units were arranged into six blocks, each with three whole-plots subdivided into four subplots. The varieties of oats were assigned randomly to the whole-plots and the concentrations of nitrogen to the subplots. All four concentrations of nitrogen were used on each whole-plot. </p> <h3>Source</h3> <p>Pinheiro, J. C. and Bates, D. M. (2000), <em>Mixed-Effects Models in S and S-PLUS</em>, Springer, New York. (Appendix A.15) </p> <p>Venables, W. N. and Ripley, B. D. (2002) <em>Modern Applied Statistics with S. (4th ed)</em>, Springer, New York. </p> <hr /><div style="text-align: center;">[Package <em>nlme</em> version 3.1-139 <a href="00Index.html">Index</a>]</div> </body></html>