archived-doc-en/reference/stats/functions/stats-cdf-normal.xml

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<refentry xml:id="function.stats-cdf-normal" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
 <refnamediv>
  <refname>stats_cdf_normal</refname>
  <refpurpose>Calculates any one parameter of the normal distribution given values for the others</refpurpose>
 </refnamediv>

 <refsect1 role="description"><!-- {{{ -->
  &reftitle.description;
  <methodsynopsis role="procedural">
   <type>float</type><methodname>stats_cdf_normal</methodname>
   <methodparam><type>float</type><parameter>par1</parameter></methodparam>
   <methodparam><type>float</type><parameter>par2</parameter></methodparam>
   <methodparam><type>float</type><parameter>par3</parameter></methodparam>
   <methodparam><type>int</type><parameter>which</parameter></methodparam>
  </methodsynopsis>
  <para>
   Returns the cumulative distribution function, its inverse, or one of its parameters,
   of the normal distribution. The kind of the return value and parameters
   (<parameter>par1</parameter>, <parameter>par2</parameter>, and <parameter>par3</parameter>)
   are determined by <parameter>which</parameter>.
  </para>
  <para>
   The following table lists the return value and parameters by <parameter>which</parameter>.
   CDF, x, mu, and sigma denotes cumulative distribution function, the value of the random
   variable, the mean and the standard deviation of the normal distribution, respectively.
   <table>
    <title>Return value and parameters</title>
    <tgroup cols="5">
     <thead>
      <row>
       <entry><parameter>which</parameter></entry>
       <entry>Return value</entry>
       <entry><parameter>par1</parameter></entry>
       <entry><parameter>par2</parameter></entry>
       <entry><parameter>par3</parameter></entry>
      </row>
     </thead>
     <tbody>
      <row>
       <entry>1</entry>
       <entry>CDF</entry>
       <entry>x</entry>
       <entry>mu</entry>
       <entry>sigma</entry>
      </row>
      <row>
       <entry>2</entry>
       <entry>x</entry>
       <entry>CDF</entry>
       <entry>mu</entry>
       <entry>sigma</entry>
      </row>
      <row>
       <entry>3</entry>
       <entry>mu</entry>
       <entry>x</entry>
       <entry>CDF</entry>
       <entry>sigma</entry>
      </row>
      <row>
       <entry>4</entry>
       <entry>sigma</entry>
       <entry>x</entry>
       <entry>CDF</entry>
       <entry>mu</entry>
      </row>
     </tbody>
    </tgroup>
   </table>
  </para>
 </refsect1><!-- }}} -->

 <refsect1 role="parameters"><!-- {{{ -->
  &reftitle.parameters;
  <para>
   <variablelist>
    <varlistentry>
     <term><parameter>par1</parameter></term>
     <listitem>
      <para>
       The first parameter
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>par2</parameter></term>
     <listitem>
      <para>
       The second parameter
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>par3</parameter></term>
     <listitem>
      <para>
       The third parameter
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>which</parameter></term>
     <listitem>
      <para>
       The flag to determine what to be calculated
      </para>
     </listitem>
    </varlistentry>
   </variablelist>
  </para>
 </refsect1><!-- }}} -->

 <refsect1 role="returnvalues"><!-- {{{ -->
  &reftitle.returnvalues;
  <para>
   Returns CDF, x, mu, or sigma, determined by <parameter>which</parameter>.
  </para>
 </refsect1><!-- }}} -->

 <!--
 <refsect1 role="errors">
  &reftitle.errors;
  <para>
   When does this function issue E_* level errors, and/or throw exceptions.
  </para>
 </refsect1>
 -->

 <!--
 <refsect1 role="changelog">
  &reftitle.changelog;
  <informaltable>
   <tgroup cols="2">
    <thead>
     <row>
      <entry>&Version;</entry>
      <entry>&Description;</entry>
     </row>
    </thead>
    <tbody>
     <row>
      <entry>Enter the version of change here</entry>
      <entry>
       Describe the change
      </entry>
     </row>
    </tbody>
   </tgroup>
  </informaltable>
 </refsect1>
 -->
 
 <!--
 <refsect1 role="examples">
  &reftitle.examples;
  <example xml:id="function-name.example.basic">
   <title><function>function-name</function> example</title>
   <para>
     Any text that describes the purpose of the example, or what
     goes on in the example should be here. (Inside the <example> tag, not out).
   </para>
   <programlisting role="php">
<![CDATA[
<?php
if ($anexample === true) {
   echo 'Use the PEAR Coding standards';
}
if ($thereisoutput === 'and it is multiple lines') {
   echo 'Use a screen like we did below';
}
?>
]]>
   </programlisting>
   &example.outputs.similar;
   <screen>
<![CDATA[
Use the PEAR Coding standards
Use a screen like we did below
]]>
   </screen>
  </example>
 </refsect1>
 -->

 <!--
 <refsect1 role="seealso">
  &reftitle.seealso;
  <simplelist>
   <member><function>somefunc</function></member>
   <member><function>another_func</function></member>
   <member>The <link linkend="something">something appendix</link></member>
  </simplelist>
 </refsect1>
 -->

</refentry>

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