diff --git a/reference/stats/functions/stats-rand-gen-beta.xml b/reference/stats/functions/stats-rand-gen-beta.xml
index 90ba2d0720..5d5405b653 100644
--- a/reference/stats/functions/stats-rand-gen-beta.xml
+++ b/reference/stats/functions/stats-rand-gen-beta.xml
@@ -3,7 +3,7 @@
 <refentry xml:id="function.stats-rand-gen-beta" xmlns="http://docbook.org/ns/docbook">
  <refnamediv>
   <refname>stats_rand_gen_beta</refname>
-  <refpurpose>Generates beta random deviate</refpurpose>
+  <refpurpose>Generates a random deviate from the beta distribution</refpurpose>
  </refnamediv>
  <refsect1 role="description">
   &reftitle.description;
@@ -27,6 +27,7 @@
      <term><parameter>a</parameter></term>
      <listitem>
       <para>
+       The shape parameter of the beta distribution
       </para>
      </listitem>
     </varlistentry>
@@ -34,6 +35,7 @@
      <term><parameter>b</parameter></term>
      <listitem>
       <para>
+       The shape parameter of the beta distribution
       </para>
      </listitem>
     </varlistentry>
@@ -44,6 +46,7 @@
  <refsect1 role="returnvalues">
   &reftitle.returnvalues;
   <para>
+   A random deviate
   </para>
  </refsect1>
 
diff --git a/reference/stats/functions/stats-rand-gen-chisquare.xml b/reference/stats/functions/stats-rand-gen-chisquare.xml
index c4a6a18224..372b57b7a5 100644
--- a/reference/stats/functions/stats-rand-gen-chisquare.xml
+++ b/reference/stats/functions/stats-rand-gen-chisquare.xml
@@ -3,7 +3,7 @@
 <refentry xml:id="function.stats-rand-gen-chisquare" xmlns="http://docbook.org/ns/docbook">
  <refnamediv>
   <refname>stats_rand_gen_chisquare</refname>
-  <refpurpose>Generates random deviate from the distribution of a chisquare with "df" degrees of freedom random variable.</refpurpose>
+  <refpurpose>Generates a random deviate from the chi-square distribution</refpurpose>
  </refnamediv>
  <refsect1 role="description">
   &reftitle.description;
@@ -11,9 +11,10 @@
    <type>float</type><methodname>stats_rand_gen_chisquare</methodname>
    <methodparam><type>float</type><parameter>df</parameter></methodparam>
   </methodsynopsis>
-
-  &warn.undocumented.func;
-
+  <para>
+   Returns a random deviate from the chi-square distribution where the degrees of
+   freedom is  <parameter>df</parameter>.
+  </para>
  </refsect1>
  <refsect1 role="parameters">
   &reftitle.parameters;
@@ -23,6 +24,7 @@
      <term><parameter>df</parameter></term>
      <listitem>
       <para>
+       The degrees of freedom
       </para>
      </listitem>
     </varlistentry>
@@ -33,6 +35,7 @@
  <refsect1 role="returnvalues">
   &reftitle.returnvalues;
   <para>
+   A random deviate
   </para>
  </refsect1>
 
diff --git a/reference/stats/functions/stats-rand-gen-exponential.xml b/reference/stats/functions/stats-rand-gen-exponential.xml
index 01f338d578..88d58536cd 100644
--- a/reference/stats/functions/stats-rand-gen-exponential.xml
+++ b/reference/stats/functions/stats-rand-gen-exponential.xml
@@ -3,7 +3,7 @@
 <refentry xml:id="function.stats-rand-gen-exponential" xmlns="http://docbook.org/ns/docbook">
  <refnamediv>
   <refname>stats_rand_gen_exponential</refname>
-  <refpurpose>Generates a single random deviate from an exponential distribution with mean "av"</refpurpose>
+  <refpurpose>Generates a random deviate from the exponential distribution</refpurpose>
  </refnamediv>
  <refsect1 role="description">
   &reftitle.description;
@@ -11,9 +11,10 @@
    <type>float</type><methodname>stats_rand_gen_exponential</methodname>
    <methodparam><type>float</type><parameter>av</parameter></methodparam>
   </methodsynopsis>
-
-  &warn.undocumented.func;
-
+  <para>
+   Returns a random deviate from the exponential distribution of which the scale is
+   <parameter>av</parameter>.
+  </para>
  </refsect1>
  <refsect1 role="parameters">
   &reftitle.parameters;
@@ -23,6 +24,7 @@
      <term><parameter>av</parameter></term>
      <listitem>
       <para>
+       The scale parameter
       </para>
      </listitem>
     </varlistentry>
@@ -33,6 +35,7 @@
  <refsect1 role="returnvalues">
   &reftitle.returnvalues;
   <para>
+   A random deviate
   </para>
  </refsect1>
 
diff --git a/reference/stats/functions/stats-rand-gen-f.xml b/reference/stats/functions/stats-rand-gen-f.xml
index 0b6504e9ca..0574db6aae 100644
--- a/reference/stats/functions/stats-rand-gen-f.xml
+++ b/reference/stats/functions/stats-rand-gen-f.xml
@@ -3,7 +3,7 @@
 <refentry xml:id="function.stats-rand-gen-f" xmlns="http://docbook.org/ns/docbook">
  <refnamediv>
   <refname>stats_rand_gen_f</refname>
-  <refpurpose>Generates a random deviate</refpurpose>
+  <refpurpose>Generates a random deviate from the F distribution</refpurpose>
  </refnamediv>
  <refsect1 role="description">
   &reftitle.description;
@@ -26,6 +26,7 @@
      <term><parameter>dfn</parameter></term>
      <listitem>
       <para>
+       The degrees of freedom in the numerator
       </para>
      </listitem>
     </varlistentry>
@@ -33,6 +34,7 @@
      <term><parameter>dfd</parameter></term>
      <listitem>
       <para>
+       The degrees of freedom in the denominator
       </para>
      </listitem>
     </varlistentry>
@@ -43,6 +45,7 @@
  <refsect1 role="returnvalues">
   &reftitle.returnvalues;
   <para>
+   A random deviate
   </para>
  </refsect1>
 
diff --git a/reference/stats/functions/stats-rand-gen-funiform.xml b/reference/stats/functions/stats-rand-gen-funiform.xml
index e188d5babf..087da301cd 100644
--- a/reference/stats/functions/stats-rand-gen-funiform.xml
+++ b/reference/stats/functions/stats-rand-gen-funiform.xml
@@ -12,9 +12,10 @@
    <methodparam><type>float</type><parameter>low</parameter></methodparam>
    <methodparam><type>float</type><parameter>high</parameter></methodparam>
   </methodsynopsis>
-
-  &warn.undocumented.func;
-
+  <para>
+   Returns a random deviate from the uniform distribution from
+   <parameter>low</parameter> to <parameter>high</parameter>.
+  </para>
  </refsect1>
  <refsect1 role="parameters">
   &reftitle.parameters;
@@ -24,6 +25,7 @@
      <term><parameter>low</parameter></term>
      <listitem>
       <para>
+       The lower bound (inclusive)
       </para>
      </listitem>
     </varlistentry>
@@ -31,6 +33,7 @@
      <term><parameter>high</parameter></term>
      <listitem>
       <para>
+       The upper bound (exclusive)
       </para>
      </listitem>
     </varlistentry>
@@ -41,6 +44,7 @@
  <refsect1 role="returnvalues">
   &reftitle.returnvalues;
   <para>
+   A random deviate
   </para>
  </refsect1>
 
diff --git a/reference/stats/functions/stats-rand-gen-gamma.xml b/reference/stats/functions/stats-rand-gen-gamma.xml
index 9fd335c7eb..85523b087d 100644
--- a/reference/stats/functions/stats-rand-gen-gamma.xml
+++ b/reference/stats/functions/stats-rand-gen-gamma.xml
@@ -4,7 +4,7 @@
 <refentry xml:id="function.stats-rand-gen-gamma" xmlns="http://docbook.org/ns/docbook">
  <refnamediv>
   <refname>stats_rand_gen_gamma</refname>
-  <refpurpose>Generates random deviates from a gamma distribution</refpurpose>
+  <refpurpose>Generates a random deviate from the gamma distribution</refpurpose>
  </refnamediv>
  <refsect1 role="description">
   &reftitle.description;
@@ -14,7 +14,7 @@
    <methodparam><type>float</type><parameter>r</parameter></methodparam>
   </methodsynopsis>
   <para>
-   Generates random deviates from the gamma distribution whose density is
+   Generates a random deviate from the gamma distribution whose density is
    (A**R)/Gamma(R) * X**(R-1) * Exp(-A*X).
   </para>
  </refsect1>
@@ -47,6 +47,7 @@
  <refsect1 role="returnvalues">
   &reftitle.returnvalues;
   <para>
+   A random deviate
   </para>
  </refsect1>
 
diff --git a/reference/stats/functions/stats-rand-gen-ibinomial-negative.xml b/reference/stats/functions/stats-rand-gen-ibinomial-negative.xml
index 1bfee637e4..ac7edfee03 100644
--- a/reference/stats/functions/stats-rand-gen-ibinomial-negative.xml
+++ b/reference/stats/functions/stats-rand-gen-ibinomial-negative.xml
@@ -3,7 +3,7 @@
 <refentry xml:id="function.stats-rand-gen-ibinomial-negative" xmlns="http://docbook.org/ns/docbook">
  <refnamediv>
   <refname>stats_rand_gen_ibinomial_negative</refname>
-  <refpurpose>Generates a single random deviate from a negative binomial distribution. Arguments : n - the number of trials in the negative binomial distribution from which a random deviate is to be generated (n &gt; 0), p - the probability of an event (0 &lt; p &lt; 1)).</refpurpose>
+  <refpurpose>Generates a random deviate from the negative binomial distribution</refpurpose>
  </refnamediv>
  <refsect1 role="description">
   &reftitle.description;
@@ -12,9 +12,10 @@
    <methodparam><type>int</type><parameter>n</parameter></methodparam>
    <methodparam><type>float</type><parameter>p</parameter></methodparam>
   </methodsynopsis>
-
-  &warn.undocumented.func;
-
+  <para>
+   Returns a random deviate from a negative binomial distribution where the number of success is
+   <parameter>n</parameter> and the success rate is <parameter>p</parameter>.
+  </para>
  </refsect1>
  <refsect1 role="parameters">
   &reftitle.parameters;
@@ -24,6 +25,7 @@
      <term><parameter>n</parameter></term>
      <listitem>
       <para>
+       The number of success
       </para>
      </listitem>
     </varlistentry>
@@ -31,6 +33,7 @@
      <term><parameter>p</parameter></term>
      <listitem>
       <para>
+       The success rate
       </para>
      </listitem>
     </varlistentry>
@@ -41,6 +44,7 @@
  <refsect1 role="returnvalues">
   &reftitle.returnvalues;
   <para>
+   A random deviate, which is the number of failure.
   </para>
  </refsect1>
 
diff --git a/reference/stats/functions/stats-rand-gen-ibinomial.xml b/reference/stats/functions/stats-rand-gen-ibinomial.xml
index c06986eba7..348d4e9338 100644
--- a/reference/stats/functions/stats-rand-gen-ibinomial.xml
+++ b/reference/stats/functions/stats-rand-gen-ibinomial.xml
@@ -3,7 +3,7 @@
 <refentry xml:id="function.stats-rand-gen-ibinomial" xmlns="http://docbook.org/ns/docbook">
  <refnamediv>
   <refname>stats_rand_gen_ibinomial</refname>
-  <refpurpose>Generates a single random deviate from a binomial distribution whose number of trials is "n" (n &gt;= 0) and whose probability of an event in each trial is "pp" ([0;1]). Method : algorithm BTPE</refpurpose>
+  <refpurpose>Generates a random deviate from the binomial distribution</refpurpose>
  </refnamediv>
  <refsect1 role="description">
   &reftitle.description;
@@ -12,9 +12,10 @@
    <methodparam><type>int</type><parameter>n</parameter></methodparam>
    <methodparam><type>float</type><parameter>pp</parameter></methodparam>
   </methodsynopsis>
-
-  &warn.undocumented.func;
-
+  <para>
+   Returns a random deviate from the binomial distribution whose number of trials is <parameter>n</parameter>
+   and whose probability of an event in each trial is <parameter>pp</parameter>.
+  </para>
  </refsect1>
  <refsect1 role="parameters">
   &reftitle.parameters;
@@ -24,6 +25,7 @@
      <term><parameter>n</parameter></term>
      <listitem>
       <para>
+       The number of trials
       </para>
      </listitem>
     </varlistentry>
@@ -31,6 +33,7 @@
      <term><parameter>pp</parameter></term>
      <listitem>
       <para>
+       The probability of an event in each trial
       </para>
      </listitem>
     </varlistentry>
@@ -41,6 +44,7 @@
  <refsect1 role="returnvalues">
   &reftitle.returnvalues;
   <para>
+   A random deviate
   </para>
  </refsect1>
 
diff --git a/reference/stats/functions/stats-rand-gen-int.xml b/reference/stats/functions/stats-rand-gen-int.xml
index 1366836856..28aefa0574 100644
--- a/reference/stats/functions/stats-rand-gen-int.xml
+++ b/reference/stats/functions/stats-rand-gen-int.xml
@@ -11,19 +11,23 @@
    <type>int</type><methodname>stats_rand_gen_int</methodname>
    <void/>
   </methodsynopsis>
-
-  &warn.undocumented.func;
-
+  <para>
+   Returns a random integer between 1 and 2147483562
+  </para>
  </refsect1>
+
+ <!--
  <refsect1 role="parameters">
   &reftitle.parameters;
   <para>
   </para>
  </refsect1>
+ -->
 
  <refsect1 role="returnvalues">
   &reftitle.returnvalues;
   <para>
+   A random integer
   </para>
  </refsect1>
 
diff --git a/reference/stats/functions/stats-rand-gen-ipoisson.xml b/reference/stats/functions/stats-rand-gen-ipoisson.xml
index fea98d9d8f..087ff4806f 100644
--- a/reference/stats/functions/stats-rand-gen-ipoisson.xml
+++ b/reference/stats/functions/stats-rand-gen-ipoisson.xml
@@ -3,7 +3,7 @@
 <refentry xml:id="function.stats-rand-gen-ipoisson" xmlns="http://docbook.org/ns/docbook">
  <refnamediv>
   <refname>stats_rand_gen_ipoisson</refname>
-  <refpurpose>Generates a single random deviate from a Poisson distribution with mean "mu" (mu &gt;= 0.0).</refpurpose>
+  <refpurpose>Generates a single random deviate from a Poisson distribution</refpurpose>
  </refnamediv>
  <refsect1 role="description">
   &reftitle.description;
@@ -11,9 +11,9 @@
    <type>int</type><methodname>stats_rand_gen_ipoisson</methodname>
    <methodparam><type>float</type><parameter>mu</parameter></methodparam>
   </methodsynopsis>
-
-  &warn.undocumented.func;
-
+  <para>
+   Returns a random deviate from the Poisson distribution with parameter <parameter>mu</parameter>.
+  </para>
  </refsect1>
  <refsect1 role="parameters">
   &reftitle.parameters;
@@ -23,6 +23,7 @@
      <term><parameter>mu</parameter></term>
      <listitem>
       <para>
+       The parameter of the Poisson distribution
       </para>
      </listitem>
     </varlistentry>
@@ -33,6 +34,7 @@
  <refsect1 role="returnvalues">
   &reftitle.returnvalues;
   <para>
+   A random deviate
   </para>
  </refsect1>
 
diff --git a/reference/stats/functions/stats-rand-gen-iuniform.xml b/reference/stats/functions/stats-rand-gen-iuniform.xml
index dfb374781a..b676c1196f 100644
--- a/reference/stats/functions/stats-rand-gen-iuniform.xml
+++ b/reference/stats/functions/stats-rand-gen-iuniform.xml
@@ -12,9 +12,10 @@
    <methodparam><type>int</type><parameter>low</parameter></methodparam>
    <methodparam><type>int</type><parameter>high</parameter></methodparam>
   </methodsynopsis>
-
-  &warn.undocumented.func;
-
+  <para>
+   Returns a random integer from the discrete uniform distribution between <parameter>low</parameter> (inclusive)
+   and <parameter>high</parameter> (inclusive).
+  </para>
  </refsect1>
  <refsect1 role="parameters">
   &reftitle.parameters;
@@ -24,6 +25,7 @@
      <term><parameter>low</parameter></term>
      <listitem>
       <para>
+       The lower bound
       </para>
      </listitem>
     </varlistentry>
@@ -31,6 +33,7 @@
      <term><parameter>high</parameter></term>
      <listitem>
       <para>
+       The upper bound
       </para>
      </listitem>
     </varlistentry>
@@ -41,6 +44,7 @@
  <refsect1 role="returnvalues">
   &reftitle.returnvalues;
   <para>
+   A random integer
   </para>
  </refsect1>
 
diff --git a/reference/stats/functions/stats-rand-gen-noncenral-chisquare.xml b/reference/stats/functions/stats-rand-gen-noncenral-chisquare.xml
index 4d3877b712..260061c69a 100644
--- a/reference/stats/functions/stats-rand-gen-noncenral-chisquare.xml
+++ b/reference/stats/functions/stats-rand-gen-noncenral-chisquare.xml
@@ -3,7 +3,7 @@
 <refentry xml:id="function.stats-rand-gen-noncenral-chisquare" xmlns="http://docbook.org/ns/docbook">
  <refnamediv>
   <refname>stats_rand_gen_noncenral_chisquare</refname>
-  <refpurpose>Generates random deviate from the distribution of a noncentral chisquare with "df" degrees of freedom and noncentrality parameter "xnonc". d must be &gt;= 1.0, xnonc must &gt;= 0.0</refpurpose>
+  <refpurpose>Generates a random deviate from the non-central chi-square distribution</refpurpose>
  </refnamediv>
  <refsect1 role="description">
   &reftitle.description;
@@ -12,9 +12,10 @@
    <methodparam><type>float</type><parameter>df</parameter></methodparam>
    <methodparam><type>float</type><parameter>xnonc</parameter></methodparam>
   </methodsynopsis>
-
-  &warn.undocumented.func;
-
+  <para>
+   Returns a random deviate from the non-central chi-square distribution with degrees of freedom,
+   <parameter>df</parameter>, and non-centrality parameter, <parameter>xnonc</parameter>.
+  </para>
  </refsect1>
  <refsect1 role="parameters">
   &reftitle.parameters;
@@ -24,6 +25,7 @@
      <term><parameter>df</parameter></term>
      <listitem>
       <para>
+       The degrees of freedom
       </para>
      </listitem>
     </varlistentry>
@@ -31,6 +33,7 @@
      <term><parameter>xnonc</parameter></term>
      <listitem>
       <para>
+       The non-centrality parameter
       </para>
      </listitem>
     </varlistentry>
@@ -41,6 +44,7 @@
  <refsect1 role="returnvalues">
   &reftitle.returnvalues;
   <para>
+   A random deviate
   </para>
  </refsect1>
 
diff --git a/reference/stats/functions/stats-rand-gen-noncentral-f.xml b/reference/stats/functions/stats-rand-gen-noncentral-f.xml
index 4659cc1c9c..de5e2cc632 100644
--- a/reference/stats/functions/stats-rand-gen-noncentral-f.xml
+++ b/reference/stats/functions/stats-rand-gen-noncentral-f.xml
@@ -3,7 +3,7 @@
 <refentry xml:id="function.stats-rand-gen-noncentral-f" xmlns="http://docbook.org/ns/docbook">
  <refnamediv>
   <refname>stats_rand_gen_noncentral_f</refname>
-  <refpurpose>Generates a random deviate from the noncentral F (variance ratio) distribution with "dfn" degrees of freedom in the numerator, and "dfd" degrees of freedom in the denominator, and noncentrality parameter "xnonc". Method : directly generates ratio of noncentral numerator chisquare variate to central denominator chisquare variate.</refpurpose>
+  <refpurpose>Generates a random deviate from the noncentral F distribution</refpurpose>
  </refnamediv>
  <refsect1 role="description">
   &reftitle.description;
@@ -13,9 +13,11 @@
    <methodparam><type>float</type><parameter>dfd</parameter></methodparam>
    <methodparam><type>float</type><parameter>xnonc</parameter></methodparam>
   </methodsynopsis>
-
-  &warn.undocumented.func;
-
+  <para>
+   Returns a random deviate from the non-central F distribution where the degrees of freedoms are
+   <parameter>dfn</parameter> (numerator) and <parameter>dfd</parameter> (denominator), and the non-centrality
+   parameter is <parameter>xnonc</parameter>.
+  </para>
  </refsect1>
  <refsect1 role="parameters">
   &reftitle.parameters;
@@ -25,6 +27,7 @@
      <term><parameter>dfn</parameter></term>
      <listitem>
       <para>
+       The degrees of freedom of the numerator
       </para>
      </listitem>
     </varlistentry>
@@ -32,6 +35,7 @@
      <term><parameter>dfd</parameter></term>
      <listitem>
       <para>
+       The degrees of freedom of the denominator
       </para>
      </listitem>
     </varlistentry>
@@ -39,6 +43,7 @@
      <term><parameter>xnonc</parameter></term>
      <listitem>
       <para>
+       The non-centrality parameter
       </para>
      </listitem>
     </varlistentry>
@@ -49,6 +54,7 @@
  <refsect1 role="returnvalues">
   &reftitle.returnvalues;
   <para>
+   A random deviate
   </para>
  </refsect1>
 
diff --git a/reference/stats/functions/stats-rand-gen-noncentral-t.xml b/reference/stats/functions/stats-rand-gen-noncentral-t.xml
index 6d29b5cc2d..ede7d12f2b 100644
--- a/reference/stats/functions/stats-rand-gen-noncentral-t.xml
+++ b/reference/stats/functions/stats-rand-gen-noncentral-t.xml
@@ -3,7 +3,7 @@
 <refentry xml:id="function.stats-rand-gen-noncentral-t" xmlns="http://docbook.org/ns/docbook">
  <refnamediv>
   <refname>stats_rand_gen_noncentral_t</refname>
-  <refpurpose>Generates a single random deviate from a noncentral T distribution</refpurpose>
+  <refpurpose>Generates a single random deviate from a non-central t-distribution</refpurpose>
  </refnamediv>
  <refsect1 role="description">
   &reftitle.description;
@@ -12,9 +12,10 @@
    <methodparam><type>float</type><parameter>df</parameter></methodparam>
    <methodparam><type>float</type><parameter>xnonc</parameter></methodparam>
   </methodsynopsis>
-
-  &warn.undocumented.func;
-
+  <para>
+   Returns a random deviate from the non-central t-distribution with the degrees of freedom,
+   <parameter>df</parameter>, and the non-centrality parameter, <parameter>xnonc</parameter>.
+  </para>
  </refsect1>
  <refsect1 role="parameters">
   &reftitle.parameters;
@@ -24,6 +25,7 @@
      <term><parameter>df</parameter></term>
      <listitem>
       <para>
+       The degrees of freedom
       </para>
      </listitem>
     </varlistentry>
@@ -31,6 +33,7 @@
      <term><parameter>xnonc</parameter></term>
      <listitem>
       <para>
+       The non-centrality parameter
       </para>
      </listitem>
     </varlistentry>
@@ -41,6 +44,7 @@
  <refsect1 role="returnvalues">
   &reftitle.returnvalues;
   <para>
+   A random deviate
   </para>
  </refsect1>
 
diff --git a/reference/stats/functions/stats-rand-gen-normal.xml b/reference/stats/functions/stats-rand-gen-normal.xml
index 507b0158e3..cc87d5509e 100644
--- a/reference/stats/functions/stats-rand-gen-normal.xml
+++ b/reference/stats/functions/stats-rand-gen-normal.xml
@@ -3,7 +3,7 @@
 <refentry xml:id="function.stats-rand-gen-normal" xmlns="http://docbook.org/ns/docbook">
  <refnamediv>
   <refname>stats_rand_gen_normal</refname>
-  <refpurpose>Generates a single random deviate from a normal distribution with mean, av, and standard deviation, sd (sd &gt;= 0). Method : Renames SNORM from TOMS as slightly modified by BWB to use RANF instead of SUNIF.</refpurpose>
+  <refpurpose>Generates a single random deviate from a normal distribution</refpurpose>
  </refnamediv>
  <refsect1 role="description">
   &reftitle.description;
@@ -12,7 +12,10 @@
    <methodparam><type>float</type><parameter>av</parameter></methodparam>
    <methodparam><type>float</type><parameter>sd</parameter></methodparam>
   </methodsynopsis>
-
+  <para>
+   Returns a random deviate from the normal distribution with mean, <parameter>av</parameter>, and standard deviation,
+   <parameter>sd</parameter>.
+  </para>
   &warn.undocumented.func;
 
  </refsect1>
@@ -24,6 +27,7 @@
      <term><parameter>av</parameter></term>
      <listitem>
       <para>
+       The mean of the normal distribution
       </para>
      </listitem>
     </varlistentry>
@@ -31,6 +35,7 @@
      <term><parameter>sd</parameter></term>
      <listitem>
       <para>
+       The standard deviation of the normal distribution
       </para>
      </listitem>
     </varlistentry>
@@ -41,6 +46,7 @@
  <refsect1 role="returnvalues">
   &reftitle.returnvalues;
   <para>
+   A random deviate
   </para>
  </refsect1>
 
diff --git a/reference/stats/functions/stats-rand-gen-t.xml b/reference/stats/functions/stats-rand-gen-t.xml
index 5f9ded8872..3294ece5f8 100644
--- a/reference/stats/functions/stats-rand-gen-t.xml
+++ b/reference/stats/functions/stats-rand-gen-t.xml
@@ -3,7 +3,7 @@
 <refentry xml:id="function.stats-rand-gen-t" xmlns="http://docbook.org/ns/docbook">
  <refnamediv>
   <refname>stats_rand_gen_t</refname>
-  <refpurpose>Generates a single random deviate from a T distribution</refpurpose>
+  <refpurpose>Generates a single random deviate from a t-distribution</refpurpose>
  </refnamediv>
  <refsect1 role="description">
   &reftitle.description;
@@ -11,9 +11,9 @@
    <type>float</type><methodname>stats_rand_gen_t</methodname>
    <methodparam><type>float</type><parameter>df</parameter></methodparam>
   </methodsynopsis>
-
-  &warn.undocumented.func;
-
+  <para>
+   Returns a random deviate from the t-distribution with the degrees of freedom, <parameter>df</parameter>.
+  </para>
  </refsect1>
  <refsect1 role="parameters">
   &reftitle.parameters;
@@ -23,6 +23,7 @@
      <term><parameter>df</parameter></term>
      <listitem>
       <para>
+       The degrees of freedom
       </para>
      </listitem>
     </varlistentry>
@@ -33,6 +34,7 @@
  <refsect1 role="returnvalues">
   &reftitle.returnvalues;
   <para>
+   A random deviate
   </para>
  </refsect1>
 
diff --git a/reference/stats/functions/stats-rand-ranf.xml b/reference/stats/functions/stats-rand-ranf.xml
index 887074385e..a99de6dd99 100644
--- a/reference/stats/functions/stats-rand-ranf.xml
+++ b/reference/stats/functions/stats-rand-ranf.xml
@@ -3,7 +3,7 @@
 <refentry xml:id="function.stats-rand-ranf" xmlns="http://docbook.org/ns/docbook">
  <refnamediv>
   <refname>stats_rand_ranf</refname>
-  <refpurpose>Returns a random floating point number from a uniform distribution over 0 - 1 (endpoints of this interval are not returned) using the current generator</refpurpose>
+  <refpurpose>Generates a random floating point number between 0 and 1</refpurpose>
  </refnamediv>
  <refsect1 role="description">
   &reftitle.description;
@@ -11,19 +11,23 @@
    <type>float</type><methodname>stats_rand_ranf</methodname>
    <void/>
   </methodsynopsis>
-
-  &warn.undocumented.func;
-
+  <para>
+   Returns a random floating point number from a uniform distribution between 0 (inclusive) and  1 (exclusive).
+  </para>
  </refsect1>
+
+ <!--
  <refsect1 role="parameters">
   &reftitle.parameters;
   <para>
   </para>
  </refsect1>
+ -->
 
  <refsect1 role="returnvalues">
   &reftitle.returnvalues;
   <para>
+   A random floating point number
   </para>
  </refsect1>