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(1978). 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(1978). The model + proposed by Rocke and Lorenzato (1995) can be written in this form as well, + but assumes approximate lognormal distribution of errors for high values of y.</p> + + </div> + + <pre class="usage"><span class='fu'>sigma_twocomp</span>(<span class='no'>y</span>, <span class='no'>sigma_low</span>, <span class='no'>rsd_high</span>)</pre> + + <h2 class="hasAnchor" id="arguments"><a class="anchor" href="#arguments"></a>Arguments</h2> + <table class="ref-arguments"> + <colgroup><col class="name" /><col class="desc" /></colgroup> + <tr> + <th>y</th> + <td><p>The magnitude of the observed value</p></td> + </tr> + <tr> + <th>sigma_low</th> + <td><p>The asymptotic minimum of the standard deviation for low observed values</p></td> + </tr> + <tr> + <th>rsd_high</th> + <td><p>The coefficient describing the increase of the standard deviation with + the magnitude of the observed value</p></td> + </tr> + </table> + + <h2 class="hasAnchor" id="value"><a class="anchor" href="#value"></a>Value</h2> + + <p>The standard deviation of the response variable.</p> + + <h2 class="hasAnchor" id="references"><a class="anchor" href="#references"></a>References</h2> + + <p>Werner, Mario, Brooks, Samuel H., and Knott, Lancaster B. (1978) + Additive, Multiplicative, and Mixed Analytical Errors. Clinical Chemistry + 24(11), 1895-1898.</p> +<p>Rocke, David M. and Lorenzato, Stefan (1995) A two-component model for + measurement error in analytical chemistry. Technometrics 37(2), 176-184.</p> + + + </div> + <div class="col-md-3 hidden-xs hidden-sm" id="sidebar"> + <h2>Contents</h2> + <ul class="nav nav-pills nav-stacked"> + <li><a href="#arguments">Arguments</a></li> + + <li><a href="#value">Value</a></li> + + <li><a href="#references">References</a></li> + </ul> + + </div> +</div> + + <footer> + <div class="copyright"> + <p>Developed by Johannes Ranke.</p> +</div> + +<div class="pkgdown"> + <p>Site built with <a href="http://pkgdown.r-lib.org/">pkgdown</a>.</p> +</div> + + </footer> + </div> + + + + </body> +</html> + |