diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..5b6a065
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,4 @@
+.Rproj.user
+.Rhistory
+.RData
+.Ruserdata
diff --git a/Biocomp_tutorial11.Rproj b/Biocomp_tutorial11.Rproj
new file mode 100644
index 0000000..8e3c2eb
--- /dev/null
+++ b/Biocomp_tutorial11.Rproj
@@ -0,0 +1,13 @@
+Version: 1.0
+
+RestoreWorkspace: Default
+SaveWorkspace: Default
+AlwaysSaveHistory: Default
+
+EnableCodeIndexing: Yes
+UseSpacesForTab: Yes
+NumSpacesForTab: 2
+Encoding: UTF-8
+
+RnwWeave: Sweave
+LaTeX: pdfLaTeX
diff --git a/Exercise9.R b/Exercise9.R
new file mode 100644
index 0000000..791d373
--- /dev/null
+++ b/Exercise9.R
@@ -0,0 +1,29 @@
+#Where x is a specified column in the files in dir 
+path=("~/Desktop/Dir")
+DirFiles=list.files(path=path, pattern="*.csv")
+for (i in 1:DirFiles) {
+  read.csv(i,header=TRUE,stringsAsFactors = FALSE, sep = ",")
+}
+varianceFunction<-function(dir,x){
+  CoefVector<-vector()
+  a=0
+  b=0
+  for (i in dir) {
+  if(i[,x]<50){
+    print("Warning! Less than 50 columns. If you wish to continue, type Yes")
+    if (readline()=="Yes"){
+      a<-mean(i[,x])
+      b<-sd(i[,x])
+      varianceCoef=b/a
+      append(CoefVector, varianceCoef, after=length(CoefVector))
+    }else{
+      break
+    }
+  }else{
+      a<-mean(i[,x])
+      b<-sd(i[,x])
+      varianceCoef=b/a
+      append(CoefVector, varianceCoef, after=length(CoefVector))
+      }
+    }
+  }