diff --git a/DESCRIPTION b/DESCRIPTION
index 494f53c..33a67a5 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -29,3 +29,5 @@ Collate:
     'around.R'
     'nearest.loc.R'
     'Bootstrap.R'
+    'polar.norm.R'
+    'jackknife.R'
diff --git a/NAMESPACE b/NAMESPACE
index da11b0a..7fc3467 100644
--- a/NAMESPACE
+++ b/NAMESPACE
@@ -2,6 +2,7 @@ export(Bootstrap)
 export(around)
 export(em.mixnorm)
 export(grid.sect)
+export(jackknife)
 export(maxbound)
 export(mc)
 export(mixnorm)
@@ -10,6 +11,7 @@ export(nearest.loc)
 export(newton.raph)
 export(plot.mc)
 export(pois.proc)
+export(polar.norm)
 export(rand.exp)
 export(rand.mvnorm)
 export(rand.norm)
diff --git a/R/.gitignore b/R/.gitignore
new file mode 100644
index 0000000..62b29a2
--- /dev/null
+++ b/R/.gitignore
@@ -0,0 +1 @@
+rand.norm.R
diff --git a/R/jackknife.R b/R/jackknife.R
index 9c2a209..c38bd98 100644
--- a/R/jackknife.R
+++ b/R/jackknife.R
@@ -14,7 +14,7 @@
 #' 
 #' @author Damon McCafferty \email{damon.mccafferty@@economics.utah.edu}
 #' 
-#' @example x = runif(10, 0, 1)
+#' @examples x = runif(10, 0, 1)
 #' mean(x)
 #' jackknife(x,mean)
 #' 
diff --git a/R/polar.norm.R b/R/polar.norm.R
new file mode 100644
index 0000000..6150983
--- /dev/null
+++ b/R/polar.norm.R
@@ -0,0 +1,27 @@
+#' Generate A Random Normal Variable
+#' 
+#' @description A method for generating a random normal variable based upon the polar method.
+#' @param mu mean of a normal distribution
+#' @param sig variance of a normal distribution
+#' 
+#' @author Damon McCafferty \email{damon.mccafferty@@economics.utah.edu}
+#' 
+#' @export
+
+polar.norm<-function(mu, sig)
+{
+  
+  u<-(2*wich.hill()-1)
+  v<-(2*wich.hill()-1)
+  
+  s<-u^2+v^2
+  
+  while(s==0||s>=1)
+  {
+    u<-(2*wich.hill()-1)
+    v<-(2*wich.hill()-1)
+    
+    s<-u^2+v^2 
+  }
+  sig*sqrt(-2*log(s)/s)*u + mu    
+}
diff --git a/R/rand.norm.R b/R/rand.norm.R
index 21a40c0..46920c1 100644
--- a/R/rand.norm.R
+++ b/R/rand.norm.R
@@ -1,27 +1,13 @@
-#' Generate A Random Normal Variable
+#' Generate Random Normal Variables
 #' 
-#' @description A method for generating a random normal variable based upon the polar method.
-#' @param mu mean of a normal distribution
-#' @param sigma variance of a normal distribution
+#' @param n Number of observations
+#' @param mean vector of means
+#' @param sd vector of standard deviations
 #' 
-#' @author Damon McCafferty \email{damon.mccafferty@@economics.utah.edu}
+#' @author Tyler Hunt \email{tyler@@psychoanalytix.com}
 #' 
 #' @export
 
-function(mu,sig)
-{
-  
-  u<-(2*wich.hill()-1)
-  v<-(2*wich.hill()-1)
-  
-  s<-u^2+v^2
-  
-  while(s==0||s>=1)
-  {
-    u<-(2*wich.hill()-1)
-    v<-(2*wich.hill()-1)
-    
-    s<-u^2+v^2 
-  }
-  sig*sqrt(-2*log(s)/s)*u + mu    
+rand.norm<-function(n, mean, sd){
+  qnorm( replicate( n, wich.hill() ) )*sd + mean
 }
diff --git a/man/jackknife.Rd b/man/jackknife.Rd
new file mode 100644
index 0000000..6ffcac4
--- /dev/null
+++ b/man/jackknife.Rd
@@ -0,0 +1,36 @@
+\name{jackknife}
+\alias{jackknife}
+\title{Resamples Data using the Jackknife Method}
+\usage{
+  jackknife(x, t)
+}
+\arguments{
+  \item{x}{a vector}
+
+  \item{t}{estimation of parameter}
+}
+\value{
+  est orignial estimation of parameter
+
+  jkest jackknife estimation of parameter
+
+  jkvar jackknife estimation of variance
+
+  jkbias jackknife estimate of biasness of parameter
+
+  jkbiascorr bias corrected parameter estimate
+}
+\description{
+  This function is used for estimating standard errors when
+  the distribution is not know.
+}
+\examples{
+x = runif(10, 0, 1)
+mean(x)
+jackknife(x,mean)
+}
+\author{
+  Damon McCafferty
+  \email{damon.mccafferty@economics.utah.edu}
+}
+
diff --git a/man/maxbound.Rd b/man/maxbound.Rd
index fc0b8cf..3de3870 100644
--- a/man/maxbound.Rd
+++ b/man/maxbound.Rd
@@ -7,9 +7,9 @@
 \arguments{
   \item{f}{the function to be optimized}
 
-  \item{lo}{the lower bound}
+  \item{lo}{the lower bound.}
 
-  \item{hi}{the upper bound}
+  \item{hi}{the upper bound.}
 }
 \description{
   Maxbound Optimization
diff --git a/man/pois.proc.Rd b/man/pois.proc.Rd
index 8399e2b..2abf9db 100644
--- a/man/pois.proc.Rd
+++ b/man/pois.proc.Rd
@@ -5,7 +5,7 @@
   pois.proc(end = 200, rate = 1)
 }
 \arguments{
-  \item{end}{the end time.}
+  \item{end}{the end time desired.}
 
   \item{rate}{the rate of occurrence.}
 }
diff --git a/man/polar.norm.Rd b/man/polar.norm.Rd
new file mode 100644
index 0000000..994bb73
--- /dev/null
+++ b/man/polar.norm.Rd
@@ -0,0 +1,20 @@
+\name{polar.norm}
+\alias{polar.norm}
+\title{Generate A Random Normal Variable}
+\usage{
+  polar.norm(mu, sig)
+}
+\arguments{
+  \item{mu}{mean of a normal distribution}
+
+  \item{sig}{variance of a normal distribution}
+}
+\description{
+  A method for generating a random normal variable based
+  upon the polar method.
+}
+\author{
+  Damon McCafferty
+  \email{damon.mccafferty@economics.utah.edu}
+}
+
diff --git a/man/rand.unif.Rd b/man/rand.unif.Rd
index 9f10463..0ce8d3d 100644
--- a/man/rand.unif.Rd
+++ b/man/rand.unif.Rd
@@ -5,11 +5,11 @@
   rand.unif(n, min = 0, max = 1)
 }
 \arguments{
-  \item{n}{Number of observations}
+  \item{n}{Number of observations.}
 
-  \item{min}{lower limit of the distribution}
+  \item{min}{lower limit of the distribution.}
 
-  \item{max}{upper limit of the distribution}
+  \item{max}{upper limit of the distribution.}
 }
 \description{
   Generate Random Uniform Variables