updated tutorial script

Tutorial_Scripts/Case_NewsletterResponses/BIA_T06_CS_newsletter_responses_exercise.Rmd

@@ -84,37 +84,41 @@ nl_opens <- read.csv2()
 
 ```{r exericses using joins}
 
+
 ```
 
 ```{r visualization}
 # exercise 23
 
-
 #exercise 24
 
 #exercise 25
 
 # exercise 26
 
-
 # exercise 27
 
 ```
 
+
 ```{r histogram with additional lines - exercise 28 + 29}
 # exercise 27-29
 
 ```
 
+```{r bar and pie charts}
+# exercise 31
 
 
-```{r bar and pie charts with colors (exercise 30 extended)}
 
-```
+# exercise 32
+library(RColorBrewer)
 
 
-```{r plot showing email opens and clicks over time}
+# exercise 33
 
-```
+# exercise 34
 
 
+
+```
\ No newline at end of file