<?php include_once $_SERVER['DOCUMENT_ROOT'] . '/include/shared-manual.inc'; $TOC = array(); $TOC_DEPRECATED = array(); $PARENTS = array(); include_once dirname(__FILE__) ."/toc/ref.stats.inc"; $setup = array ( 'home' => array ( 0 => 'index.php', 1 => 'PHP Manual', ), 'head' => array ( 0 => 'UTF-8', 1 => 'zh', ), 'this' => array ( 0 => 'function.stats-dens-pmf-binomial.php', 1 => 'stats_dens_pmf_binomial', 2 => 'Probability mass function of the binomial distribution', ), 'up' => array ( 0 => 'ref.stats.php', 1 => 'Statistic 函数', ), 'prev' => array ( 0 => 'function.stats-dens-normal.php', 1 => 'stats_dens_normal', ), 'next' => array ( 0 => 'function.stats-dens-pmf-hypergeometric.php', 1 => 'stats_dens_pmf_hypergeometric', ), 'alternatives' => array ( ), 'source' => array ( 'lang' => 'en', 'path' => 'reference/stats/functions/stats-dens-pmf-binomial.xml', ), 'history' => array ( ), ); $setup["toc"] = $TOC; $setup["toc_deprecated"] = $TOC_DEPRECATED; $setup["parents"] = $PARENTS; manual_setup($setup); contributors($setup); ?> <div id="function.stats-dens-pmf-binomial" class="refentry"> <div class="refnamediv"> <h1 class="refname">stats_dens_pmf_binomial</h1> <p class="verinfo">(PECL stats >= 1.0.0)</p><p class="refpurpose"><span class="refname">stats_dens_pmf_binomial</span> — <span class="dc-title">Probability mass function of the binomial distribution</span></p> </div> <div class="refsect1 description" id="refsect1-function.stats-dens-pmf-binomial-description"> <h3 class="title">说明</h3> <div class="methodsynopsis dc-description"> <span class="methodname"><strong>stats_dens_pmf_binomial</strong></span>(<span class="methodparam"><span class="type"><a href="language.types.float.php" class="type float">float</a></span> <code class="parameter">$x</code></span>, <span class="methodparam"><span class="type"><a href="language.types.float.php" class="type float">float</a></span> <code class="parameter">$n</code></span>, <span class="methodparam"><span class="type"><a href="language.types.float.php" class="type float">float</a></span> <code class="parameter">$pi</code></span>): <span class="type"><a href="language.types.float.php" class="type float">float</a></span></div> <p class="para rdfs-comment"> Returns the probability mass at <code class="parameter">x</code>, where the random variable follows the binomial distribution of which the number of trials is <code class="parameter">n</code> and the success rate is <code class="parameter">pi</code>. </p> </div> <div class="refsect1 parameters" id="refsect1-function.stats-dens-pmf-binomial-parameters"> <h3 class="title">参数</h3> <p class="para"> <dl> <dt><code class="parameter">x</code></dt> <dd> <p class="para"> The value at which the probability mass is calculated </p> </dd> <dt><code class="parameter">n</code></dt> <dd> <p class="para"> The number of trials of the distribution </p> </dd> <dt><code class="parameter">pi</code></dt> <dd> <p class="para"> The success rate of the distribution </p> </dd> </dl> </p> </div> <div class="refsect1 returnvalues" id="refsect1-function.stats-dens-pmf-binomial-returnvalues"> <h3 class="title">返回值</h3> <p class="para"> The probability mass at <code class="parameter">x</code> or <strong><code><a href="reserved.constants.php#constant.false">false</a></code></strong> for failure. </p> </div> </div><?php manual_footer($setup); ?>