[R] what do i do to fix missing packages...see error

[frenchcr]

> exampledata <- rnorm(10000)
> summary(exampledata)
     Min.   1st Qu.    Median      Mean   3rd Qu.      Max. 
-4.030000 -0.666200 -0.023390 -0.009384  0.664700  4.092000 
> desc <- function(mydata) {
+    require(e1071)
+    quantls <- quantile(x=mydata, probs=seq(from=0, to=1, by=0.25))
+    themean <- mean(mydata)
+    thesd <- sd(mydata)
+    kurt <- kurtosis(mydata)
+    skew <- skewness(mydata)
+    retlist <- list(Quantiles=quantls, Mean=themean, StandDev=thesd,
+                    Skewness=skew, Kurtosis=kurt)
+    return(retlist)
+ }

> descstats <- desc(exampledata)

Loading required package: e1071
Error in desc(exampledata) : could not find function "kurtosis"
In addition: Warning message:
In library(package, lib.loc = lib.loc, character.only = TRUE, logical.return
= TRUE,  :
  there is no package called 'e1071'


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