EVOLUTION-MANAGER
Edit File: gravity.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: Acceleration Due to Gravity</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 gravity {boot}"><tr><td>gravity {boot}</td><td style="text-align: right;">R Documentation</td></tr></table> <h2> Acceleration Due to Gravity </h2> <h3>Description</h3> <p>The <code>gravity</code> data frame has 81 rows and 2 columns. </p> <p>The <code>grav</code> data set has 26 rows and 2 columns. </p> <p>Between May 1934 and July 1935, the National Bureau of Standards in Washington D.C. conducted a series of experiments to estimate the acceleration due to gravity, <em>g</em>, at Washington. Each experiment produced a number of replicate estimates of <em>g</em> using the same methodology. Although the basic method remained the same for all experiments, that of the reversible pendulum, there were changes in configuration. </p> <p>The <code>gravity</code> data frame contains the data from all eight experiments. The <code>grav</code> data frame contains the data from the experiments 7 and 8. The data are expressed as deviations from 980.000 in centimetres per second squared. </p> <h3>Usage</h3> <pre> gravity </pre> <h3>Format</h3> <p>This data frame contains the following columns: </p> <dl> <dt><code>g</code></dt><dd> <p>The deviation of the estimate from 980.000 centimetres per second squared. </p> </dd> <dt><code>series</code></dt><dd> <p>A factor describing from which experiment the estimate was derived. </p> </dd></dl> <h3>Source</h3> <p>The data were obtained from </p> <p>Cressie, N. (1982) Playing safe with misweighted means. <em>Journal of the American Statistical Association</em>, <b>77</b>, 754–759. </p> <h3>References</h3> <p>Davison, A.C. and Hinkley, D.V. (1997) <em>Bootstrap Methods and Their Application</em>. Cambridge University Press. </p> <hr /><div style="text-align: center;">[Package <em>boot</em> version 1.3-22 <a href="00Index.html">Index</a>]</div> </body></html>