diff --git a/tutorial_page.Rmd b/tutorial_page.Rmd
index f3130a0d4c1fb05d9d62bd19a05f909afe03f71e..5d49752d6d7106192cc837f96516b88ecad0f5bd 100644
--- a/tutorial_page.Rmd
+++ b/tutorial_page.Rmd
@@ -138,16 +138,16 @@ gameData$`Mechanics` <- tolower(gameData$`Mechanics`)
 gameData$`Mechanics`
 ```
 
-Somit wurden alle String in der "Mechanics"-Spalte zur Lowercase gecastet.
+Somit wurden alle Zeichenketten in der Spalte "Mechanics" in Kleinbuchstaben umgewandelt.
 
 #### Ersetzen von Werten:
 
 ```{r replace-variable, exercise=TRUE}
-gameData$`Mechanics` <- gsub("Action", "ACTION", gameData$`Mechanics`)
+gameData$`Mechanics` <- gsub("Action", "!!!ACTION!!!", gameData$`Mechanics`)
 gameData$`Mechanics`
 ```
 
-Somit haben wir alle treffer für "Action" mit "ACTION" ersetzt.
+Somit haben wir alle treffer für "Action" mit "!!!ACTION!!!" ersetzt.
 
 #### Behandlung von fehlenden Werten:
 
@@ -170,8 +170,6 @@ vector <- unique(vector)
 vector
 ```
 
-So werden die Duplikate aus dem Datensatz entfernt.
-
 #### Behandlung von Sonderzeichen
 
 ```{r replace-special-chars, exercise=TRUE}
diff --git a/tutorial_page.html b/tutorial_page.html
index 620de10660afaaede800a778493d50db8c950ceb..c17fdd5a2aae07023ffce878f522a557f0084aac 100644
--- a/tutorial_page.html
+++ b/tutorial_page.html
@@ -292,19 +292,20 @@ data-lines="0" data-pipe="|&gt;">
 gameData$`Mechanics`</code></pre>
 <script type="application/json" data-ui-opts="1">{"engine":"r","has_checker":false,"caption":"<span data-i18n=\"text.enginecap\" data-i18n-opts=\"{&quot;engine&quot;:&quot;R&quot;}\">R Code<\/span>"}</script>
 </div>
-<p>Somit wurden alle String in der “Mechanics”-Spalte zur Lowercase
-gecastet.</p>
+<p>Somit wurden alle Zeichenketten in der Spalte “Mechanics” in
+Kleinbuchstaben umgewandelt.</p>
 </div>
 <div id="section-ersetzen-von-werten" class="section level4">
 <h4>Ersetzen von Werten:</h4>
 <div class="tutorial-exercise" data-label="replace-variable"
 data-completion="1" data-diagnostics="1" data-startover="1"
 data-lines="0" data-pipe="|&gt;">
-<pre class="text"><code>gameData$`Mechanics` &lt;- gsub(&quot;Action&quot;, &quot;ACTION&quot;, gameData$`Mechanics`)
+<pre class="text"><code>gameData$`Mechanics` &lt;- gsub(&quot;Action&quot;, &quot;!!!ACTION!!!&quot;, gameData$`Mechanics`)
 gameData$`Mechanics`</code></pre>
 <script type="application/json" data-ui-opts="1">{"engine":"r","has_checker":false,"caption":"<span data-i18n=\"text.enginecap\" data-i18n-opts=\"{&quot;engine&quot;:&quot;R&quot;}\">R Code<\/span>"}</script>
 </div>
-<p>Somit haben wir alle treffer für “Action” mit “ACTION” ersetzt.</p>
+<p>Somit haben wir alle treffer für “Action” mit “!!!ACTION!!!”
+ersetzt.</p>
 </div>
 <div id="section-behandlung-von-fehlenden-werten"
 class="section level4">
@@ -333,7 +334,6 @@ vector &lt;- unique(vector)
 vector</code></pre>
 <script type="application/json" data-ui-opts="1">{"engine":"r","has_checker":false,"caption":"<span data-i18n=\"text.enginecap\" data-i18n-opts=\"{&quot;engine&quot;:&quot;R&quot;}\">R Code<\/span>"}</script>
 </div>
-<p>So werden die Duplikate aus dem Datensatz entfernt.</p>
 </div>
 <div id="section-behandlung-von-sonderzeichen" class="section level4">
 <h4>Behandlung von Sonderzeichen</h4>
@@ -1072,7 +1072,7 @@ learnr:::store_exercise_cache(structure(list(label = "replace-variable", global_
 "gameData <- read_excel(\"bgg_dataset.xlsx\", sheet = \"Sheet\")", 
 "knitr::opts_chunk$set(echo = FALSE)"), chunk_opts = list(label = "setup", 
     include = FALSE)), setup = NULL, chunks = list(list(label = "replace-variable", 
-    code = "gameData$`Mechanics` <- gsub(\"Action\", \"ACTION\", gameData$`Mechanics`)\ngameData$`Mechanics`", 
+    code = "gameData$`Mechanics` <- gsub(\"Action\", \"!!!ACTION!!!\", gameData$`Mechanics`)\ngameData$`Mechanics`", 
     opts = list(label = "\"replace-variable\"", exercise = "TRUE"), 
     engine = "r")), code_check = NULL, error_check = NULL, check = NULL, 
     solution = NULL, tests = NULL, options = list(eval = FALSE, 
@@ -1092,7 +1092,7 @@ learnr:::store_exercise_cache(structure(list(label = "replace-variable", global_
         message = TRUE, render = NULL, ref.label = NULL, child = NULL, 
         engine = "r", split = FALSE, include = TRUE, purl = TRUE, 
         max.print = 1000, label = "replace-variable", exercise = TRUE, 
-        code = c("gameData$`Mechanics` <- gsub(\"Action\", \"ACTION\", gameData$`Mechanics`)", 
+        code = c("gameData$`Mechanics` <- gsub(\"Action\", \"!!!ACTION!!!\", gameData$`Mechanics`)", 
         "gameData$`Mechanics`"), out.width.px = 624, out.height.px = 384, 
         params.src = "replace-variable, exercise=TRUE", fig.num = 0, 
         exercise.df_print = "paged", exercise.checker = "NULL"), 
@@ -1228,19 +1228,19 @@ learnr:::store_exercise_cache(structure(list(label = "replace-special-chars", gl
 <script type="application/shiny-prerendered" data-context="server">
 learnr:::question_prerendered_chunk(structure(list(type = "learnr_radio", label = "second-quiz-1", 
     question = structure("Mit welchem R-Befehl lassen sich Packages installieren?", html = TRUE, class = c("html", 
-    "character")), answers = list(structure(list(id = "lnr_ans_7e64aa", 
+    "character")), answers = list(structure(list(id = "lnr_ans_1566a39", 
         option = "install.packages()", value = "install.packages()", 
         label = structure("install.packages()", html = TRUE, class = c("html", 
         "character")), correct = TRUE, message = NULL, type = "literal"), class = c("tutorial_question_answer", 
-    "tutorial_quiz_answer")), structure(list(id = "lnr_ans_4640907", 
+    "tutorial_quiz_answer")), structure(list(id = "lnr_ans_b0edff0", 
         option = "add.packages()", value = "add.packages()", 
         label = structure("add.packages()", html = TRUE, class = c("html", 
         "character")), correct = FALSE, message = NULL, type = "literal"), class = c("tutorial_question_answer", 
-    "tutorial_quiz_answer")), structure(list(id = "lnr_ans_6916962", 
+    "tutorial_quiz_answer")), structure(list(id = "lnr_ans_f80465b", 
         option = "install.library()", value = "install.library()", 
         label = structure("install.library()", html = TRUE, class = c("html", 
         "character")), correct = FALSE, message = NULL, type = "literal"), class = c("tutorial_question_answer", 
-    "tutorial_quiz_answer")), structure(list(id = "lnr_ans_602ca8e", 
+    "tutorial_quiz_answer")), structure(list(id = "lnr_ans_71aef76", 
         option = "install()", value = "install()", label = structure("install()", html = TRUE, class = c("html", 
         "character")), correct = FALSE, message = NULL, type = "literal"), class = c("tutorial_question_answer", 
     "tutorial_quiz_answer"))), button_labels = list(submit = structure("<span data-i18n=\"button.questionsubmit\">Submit Answer<\u002fspan>", html = TRUE, class = c("html", 
@@ -1251,7 +1251,7 @@ learnr:::question_prerendered_chunk(structure(list(type = "learnr_radio", label
     "character")), message = NULL, post_message = NULL), ids = list(
         answer = "second-quiz-1-answer", question = "second-quiz-1"), 
     loading = NULL, random_answer_order = FALSE, allow_retry = FALSE, 
-    seed = 1982843609.07667, options = list()), class = c("learnr_radio", 
+    seed = 637017036.703366, options = list()), class = c("learnr_radio", 
 "tutorial_question")), session = session)
 </script>
 
@@ -1259,16 +1259,16 @@ learnr:::question_prerendered_chunk(structure(list(type = "learnr_radio", label
 <script type="application/shiny-prerendered" data-context="server">
 learnr:::question_prerendered_chunk(structure(list(type = "learnr_radio", label = "second-quiz-2", 
     question = structure("Mit welchem R-Befehl lassen sich die installierten Packages initialisieren?", html = TRUE, class = c("html", 
-    "character")), answers = list(structure(list(id = "lnr_ans_158bafc", 
+    "character")), answers = list(structure(list(id = "lnr_ans_a2e794d", 
         option = "use()", value = "use()", label = structure("use()", html = TRUE, class = c("html", 
         "character")), correct = FALSE, message = NULL, type = "literal"), class = c("tutorial_question_answer", 
-    "tutorial_quiz_answer")), structure(list(id = "lnr_ans_9a4ec6", 
+    "tutorial_quiz_answer")), structure(list(id = "lnr_ans_f9169d7", 
         option = "library()", value = "library()", label = structure("library()", html = TRUE, class = c("html", 
         "character")), correct = TRUE, message = NULL, type = "literal"), class = c("tutorial_question_answer", 
-    "tutorial_quiz_answer")), structure(list(id = "lnr_ans_3e7ef13", 
+    "tutorial_quiz_answer")), structure(list(id = "lnr_ans_9815071", 
         option = "init()", value = "init()", label = structure("init()", html = TRUE, class = c("html", 
         "character")), correct = FALSE, message = NULL, type = "literal"), class = c("tutorial_question_answer", 
-    "tutorial_quiz_answer")), structure(list(id = "lnr_ans_8fef38e", 
+    "tutorial_quiz_answer")), structure(list(id = "lnr_ans_ad51d4f", 
         option = "install.packages()", value = "install.packages()", 
         label = structure("install.packages()", html = TRUE, class = c("html", 
         "character")), correct = FALSE, message = NULL, type = "literal"), class = c("tutorial_question_answer", 
@@ -1280,23 +1280,23 @@ learnr:::question_prerendered_chunk(structure(list(type = "learnr_radio", label
     "character")), message = NULL, post_message = NULL), ids = list(
         answer = "second-quiz-2-answer", question = "second-quiz-2"), 
     loading = NULL, random_answer_order = FALSE, allow_retry = FALSE, 
-    seed = 1340973042.37556, options = list()), class = c("learnr_radio", 
+    seed = 1625983262.74284, options = list()), class = c("learnr_radio", 
 "tutorial_question")), session = session)
 </script>
  
 <script type="application/shiny-prerendered" data-context="server">
 learnr:::question_prerendered_chunk(structure(list(type = "learnr_radio", label = "second-quiz-3", 
     question = structure("Welcher Packet benutzen wir, um XLSX-Dateien zu lesen?", html = TRUE, class = c("html", 
-    "character")), answers = list(structure(list(id = "lnr_ans_fcf329d", 
+    "character")), answers = list(structure(list(id = "lnr_ans_2f69ac3", 
         option = "readxl()", value = "readxl()", label = structure("readxl()", html = TRUE, class = c("html", 
         "character")), correct = TRUE, message = NULL, type = "literal"), class = c("tutorial_question_answer", 
-    "tutorial_quiz_answer")), structure(list(id = "lnr_ans_a9d97de", 
+    "tutorial_quiz_answer")), structure(list(id = "lnr_ans_d998b62", 
         option = "readxls()", value = "readxls()", label = structure("readxls()", html = TRUE, class = c("html", 
         "character")), correct = FALSE, message = NULL, type = "literal"), class = c("tutorial_question_answer", 
-    "tutorial_quiz_answer")), structure(list(id = "lnr_ans_efd8c13", 
+    "tutorial_quiz_answer")), structure(list(id = "lnr_ans_7be87fc", 
         option = "readexcel()", value = "readexcel()", label = structure("readexcel()", html = TRUE, class = c("html", 
         "character")), correct = FALSE, message = NULL, type = "literal"), class = c("tutorial_question_answer", 
-    "tutorial_quiz_answer")), structure(list(id = "lnr_ans_d013447", 
+    "tutorial_quiz_answer")), structure(list(id = "lnr_ans_20aac7b", 
         option = "excelread()", value = "excelread()", label = structure("excelread()", html = TRUE, class = c("html", 
         "character")), correct = FALSE, message = NULL, type = "literal"), class = c("tutorial_question_answer", 
     "tutorial_quiz_answer"))), button_labels = list(submit = structure("<span data-i18n=\"button.questionsubmit\">Submit Answer<\u002fspan>", html = TRUE, class = c("html", 
@@ -1307,7 +1307,7 @@ learnr:::question_prerendered_chunk(structure(list(type = "learnr_radio", label
     "character")), message = NULL, post_message = NULL), ids = list(
         answer = "second-quiz-3-answer", question = "second-quiz-3"), 
     loading = NULL, random_answer_order = FALSE, allow_retry = FALSE, 
-    seed = 155889831.927408, options = list()), class = c("learnr_radio", 
+    seed = 349725907.337146, options = list()), class = c("learnr_radio", 
 "tutorial_question")), session = session)
 </script>
 
@@ -1315,19 +1315,19 @@ learnr:::question_prerendered_chunk(structure(list(type = "learnr_radio", label
 <script type="application/shiny-prerendered" data-context="server">
 learnr:::question_prerendered_chunk(structure(list(type = "learnr_radio", label = "second-quiz-4", 
     question = structure("Wie lassen sich einzelne Spalten aus dem Datensatz auslesen?", html = TRUE, class = c("html", 
-    "character")), answers = list(structure(list(id = "lnr_ans_33eeebb", 
+    "character")), answers = list(structure(list(id = "lnr_ans_db23f06", 
         option = "dataset&\\`column\\`", value = "dataset&\\`column\\`", 
         label = structure("dataset&amp;`column`", html = TRUE, class = c("html", 
         "character")), correct = FALSE, message = NULL, type = "literal"), class = c("tutorial_question_answer", 
-    "tutorial_quiz_answer")), structure(list(id = "lnr_ans_332fe06", 
+    "tutorial_quiz_answer")), structure(list(id = "lnr_ans_eaab6e7", 
         option = "column$dataset", value = "column$dataset", 
         label = structure("column$dataset", html = TRUE, class = c("html", 
         "character")), correct = FALSE, message = NULL, type = "literal"), class = c("tutorial_question_answer", 
-    "tutorial_quiz_answer")), structure(list(id = "lnr_ans_a7646ad", 
+    "tutorial_quiz_answer")), structure(list(id = "lnr_ans_7d67ee2", 
         option = "dataset%\\`column\\`", value = "dataset%\\`column\\`", 
         label = structure("dataset%`column`", html = TRUE, class = c("html", 
         "character")), correct = FALSE, message = NULL, type = "literal"), class = c("tutorial_question_answer", 
-    "tutorial_quiz_answer")), structure(list(id = "lnr_ans_f3bce47", 
+    "tutorial_quiz_answer")), structure(list(id = "lnr_ans_ff7fd30", 
         option = "dataset$\\`column\\`", value = "dataset$\\`column\\`", 
         label = structure("dataset$`column`", html = TRUE, class = c("html", 
         "character")), correct = TRUE, message = NULL, type = "literal"), class = c("tutorial_question_answer", 
@@ -1339,7 +1339,7 @@ learnr:::question_prerendered_chunk(structure(list(type = "learnr_radio", label
     "character")), message = NULL, post_message = NULL), ids = list(
         answer = "second-quiz-4-answer", question = "second-quiz-4"), 
     loading = NULL, random_answer_order = FALSE, allow_retry = FALSE, 
-    seed = 974396909.546261, options = list()), class = c("learnr_radio", 
+    seed = 1398777110.34864, options = list()), class = c("learnr_radio", 
 "tutorial_question")), session = session)
 </script>
  
@@ -1591,10 +1591,10 @@ learnr:::store_exercise_cache(structure(list(label = "lm-plot", global_setup = s
 <script type="application/shiny-prerendered" data-context="server">
 learnr:::question_prerendered_chunk(structure(list(type = "learnr_radio", label = "hypothesis-quiz-1", 
     question = structure("Spiele mit hoeherem Complexity Score haben eine niedrigere Anzahl von Owned Users.", html = TRUE, class = c("html", 
-    "character")), answers = list(structure(list(id = "lnr_ans_2c74e46", 
+    "character")), answers = list(structure(list(id = "lnr_ans_68ccd7b", 
         option = "Wahr", value = "Wahr", label = structure("Wahr", html = TRUE, class = c("html", 
         "character")), correct = TRUE, message = NULL, type = "literal"), class = c("tutorial_question_answer", 
-    "tutorial_quiz_answer")), structure(list(id = "lnr_ans_5e4751c", 
+    "tutorial_quiz_answer")), structure(list(id = "lnr_ans_1e6296f", 
         option = "Falsch", value = "Falsch", label = structure("Falsch", html = TRUE, class = c("html", 
         "character")), correct = FALSE, message = NULL, type = "literal"), class = c("tutorial_question_answer", 
     "tutorial_quiz_answer"))), button_labels = list(submit = structure("<span data-i18n=\"button.questionsubmit\">Submit Answer<\u002fspan>", html = TRUE, class = c("html", 
@@ -1605,7 +1605,7 @@ learnr:::question_prerendered_chunk(structure(list(type = "learnr_radio", label
     "character")), message = NULL, post_message = NULL), ids = list(
         answer = "hypothesis-quiz-1-answer", question = "hypothesis-quiz-1"), 
     loading = NULL, random_answer_order = FALSE, allow_retry = FALSE, 
-    seed = 461792430.284961, options = list()), class = c("learnr_radio", 
+    seed = 1515152110.79445, options = list()), class = c("learnr_radio", 
 "tutorial_question")), session = session)
 </script>
 
@@ -1613,10 +1613,10 @@ learnr:::question_prerendered_chunk(structure(list(type = "learnr_radio", label
 <script type="application/shiny-prerendered" data-context="server">
 learnr:::question_prerendered_chunk(structure(list(type = "learnr_radio", label = "hypothesis-quiz-2", 
     question = structure("Spiele mit hoeherem Complexity Score haben hoehere Play Time.", html = TRUE, class = c("html", 
-    "character")), answers = list(structure(list(id = "lnr_ans_7371086", 
+    "character")), answers = list(structure(list(id = "lnr_ans_3846206", 
         option = "Wahr", value = "Wahr", label = structure("Wahr", html = TRUE, class = c("html", 
         "character")), correct = TRUE, message = NULL, type = "literal"), class = c("tutorial_question_answer", 
-    "tutorial_quiz_answer")), structure(list(id = "lnr_ans_205cd45", 
+    "tutorial_quiz_answer")), structure(list(id = "lnr_ans_a8c77d4", 
         option = "Falsch", value = "Falsch", label = structure("Falsch", html = TRUE, class = c("html", 
         "character")), correct = FALSE, message = NULL, type = "literal"), class = c("tutorial_question_answer", 
     "tutorial_quiz_answer"))), button_labels = list(submit = structure("<span data-i18n=\"button.questionsubmit\">Submit Answer<\u002fspan>", html = TRUE, class = c("html", 
@@ -1627,7 +1627,7 @@ learnr:::question_prerendered_chunk(structure(list(type = "learnr_radio", label
     "character")), message = NULL, post_message = NULL), ids = list(
         answer = "hypothesis-quiz-2-answer", question = "hypothesis-quiz-2"), 
     loading = NULL, random_answer_order = FALSE, allow_retry = FALSE, 
-    seed = 780167729.636706, options = list()), class = c("learnr_radio", 
+    seed = 750405261.150565, options = list()), class = c("learnr_radio", 
 "tutorial_question")), session = session)
 </script>
  
@@ -1673,20 +1673,20 @@ learnr:::store_exercise_cache(structure(list(label = "plotExercise", global_setu
 <script type="application/shiny-prerendered" data-context="server">
 learnr:::question_prerendered_chunk(structure(list(type = "learnr_radio", label = "quiz-ggplot-1", 
     question = structure("Was ist der Median im Diagramm?", html = TRUE, class = c("html", 
-    "character")), answers = list(structure(list(id = "lnr_ans_8f585f1", 
+    "character")), answers = list(structure(list(id = "lnr_ans_878aef5", 
         option = "ein vertikaler Strich", value = "ein vertikaler Strich", 
         label = structure("ein vertikaler Strich", html = TRUE, class = c("html", 
         "character")), correct = FALSE, message = NULL, type = "literal"), class = c("tutorial_question_answer", 
-    "tutorial_quiz_answer")), structure(list(id = "lnr_ans_40aece4", 
+    "tutorial_quiz_answer")), structure(list(id = "lnr_ans_772611e", 
         option = "die Höhe der Box", value = "die Höhe der Box", 
         label = structure("die Höhe der Box", html = TRUE, class = c("html", 
         "character")), correct = FALSE, message = NULL, type = "literal"), class = c("tutorial_question_answer", 
-    "tutorial_quiz_answer")), structure(list(id = "lnr_ans_b8158f0", 
+    "tutorial_quiz_answer")), structure(list(id = "lnr_ans_4d30e87", 
         option = "ein horizontaler Strich in der Mitter der Box", 
         value = "ein horizontaler Strich in der Mitter der Box", 
         label = structure("ein horizontaler Strich in der Mitter der Box", html = TRUE, class = c("html", 
         "character")), correct = TRUE, message = NULL, type = "literal"), class = c("tutorial_question_answer", 
-    "tutorial_quiz_answer")), structure(list(id = "lnr_ans_79b80f4", 
+    "tutorial_quiz_answer")), structure(list(id = "lnr_ans_158e05b", 
         option = "das untere Ende der Box", value = "das untere Ende der Box", 
         label = structure("das untere Ende der Box", html = TRUE, class = c("html", 
         "character")), correct = FALSE, message = NULL, type = "literal"), class = c("tutorial_question_answer", 
@@ -1698,7 +1698,7 @@ learnr:::question_prerendered_chunk(structure(list(type = "learnr_radio", label
     "character")), message = NULL, post_message = NULL), ids = list(
         answer = "quiz-ggplot-1-answer", question = "quiz-ggplot-1"), 
     loading = NULL, random_answer_order = FALSE, allow_retry = FALSE, 
-    seed = 2140697264.00316, options = list()), class = c("learnr_radio", 
+    seed = 1818856474.65303, options = list()), class = c("learnr_radio", 
 "tutorial_question")), session = session)
 </script>
 
@@ -1706,19 +1706,19 @@ learnr:::question_prerendered_chunk(structure(list(type = "learnr_radio", label
 <script type="application/shiny-prerendered" data-context="server">
 learnr:::question_prerendered_chunk(structure(list(type = "learnr_checkbox", label = "quiz-ggplot-2", 
     question = structure("Was sind die Quartile im Diagramm?(Es sind mehrere Antworten möglich)", html = TRUE, class = c("html", 
-    "character")), answers = list(structure(list(id = "lnr_ans_788202e", 
+    "character")), answers = list(structure(list(id = "lnr_ans_279be13", 
         option = "das obere Ende der Box", value = "das obere Ende der Box", 
         label = structure("das obere Ende der Box", html = TRUE, class = c("html", 
         "character")), correct = TRUE, message = NULL, type = "literal"), class = c("tutorial_question_answer", 
-    "tutorial_quiz_answer")), structure(list(id = "lnr_ans_5f5f654", 
+    "tutorial_quiz_answer")), structure(list(id = "lnr_ans_887870f", 
         option = "Punkte oberhalb der Box", value = "Punkte oberhalb der Box", 
         label = structure("Punkte oberhalb der Box", html = TRUE, class = c("html", 
         "character")), correct = FALSE, message = NULL, type = "literal"), class = c("tutorial_question_answer", 
-    "tutorial_quiz_answer")), structure(list(id = "lnr_ans_9f7151f", 
+    "tutorial_quiz_answer")), structure(list(id = "lnr_ans_3022269", 
         option = "ein Drittel des vertikalen Strichs", value = "ein Drittel des vertikalen Strichs", 
         label = structure("ein Drittel des vertikalen Strichs", html = TRUE, class = c("html", 
         "character")), correct = FALSE, message = NULL, type = "literal"), class = c("tutorial_question_answer", 
-    "tutorial_quiz_answer")), structure(list(id = "lnr_ans_d923cc7", 
+    "tutorial_quiz_answer")), structure(list(id = "lnr_ans_874cf80", 
         option = "das untere Ende der Box", value = "das untere Ende der Box", 
         label = structure("das untere Ende der Box", html = TRUE, class = c("html", 
         "character")), correct = TRUE, message = NULL, type = "literal"), class = c("tutorial_question_answer", 
@@ -1730,26 +1730,26 @@ learnr:::question_prerendered_chunk(structure(list(type = "learnr_checkbox", lab
     "character")), message = NULL, post_message = NULL), ids = list(
         answer = "quiz-ggplot-2-answer", question = "quiz-ggplot-2"), 
     loading = NULL, random_answer_order = FALSE, allow_retry = FALSE, 
-    seed = 961543748.052246, options = list()), class = c("learnr_checkbox", 
+    seed = 1157877186.46082, options = list()), class = c("learnr_checkbox", 
 "tutorial_question")), session = session)
 </script>
  
 <script type="application/shiny-prerendered" data-context="server">
 learnr:::question_prerendered_chunk(structure(list(type = "learnr_radio", label = "quiz-ggplot-3", 
     question = structure("Was sind die Maximalwerte im Diagramm?", html = TRUE, class = c("html", 
-    "character")), answers = list(structure(list(id = "lnr_ans_a617089", 
+    "character")), answers = list(structure(list(id = "lnr_ans_c3d68ea", 
         option = "Punkte oberhalb der Box", value = "Punkte oberhalb der Box", 
         label = structure("Punkte oberhalb der Box", html = TRUE, class = c("html", 
         "character")), correct = FALSE, message = NULL, type = "literal"), class = c("tutorial_question_answer", 
-    "tutorial_quiz_answer")), structure(list(id = "lnr_ans_bdd146e", 
+    "tutorial_quiz_answer")), structure(list(id = "lnr_ans_34a52bd", 
         option = "die Spitzen des vertikalen Strichs", value = "die Spitzen des vertikalen Strichs", 
         label = structure("die Spitzen des vertikalen Strichs", html = TRUE, class = c("html", 
         "character")), correct = TRUE, message = NULL, type = "literal"), class = c("tutorial_question_answer", 
-    "tutorial_quiz_answer")), structure(list(id = "lnr_ans_9093b6a", 
+    "tutorial_quiz_answer")), structure(list(id = "lnr_ans_81dc897", 
         option = "die x-Achse und die y-Achse", value = "die x-Achse und die y-Achse", 
         label = structure("die x-Achse und die y-Achse", html = TRUE, class = c("html", 
         "character")), correct = FALSE, message = NULL, type = "literal"), class = c("tutorial_question_answer", 
-    "tutorial_quiz_answer")), structure(list(id = "lnr_ans_9d9c26c", 
+    "tutorial_quiz_answer")), structure(list(id = "lnr_ans_fe3a57f", 
         option = "die Flaeche der Box", value = "die Flaeche der Box", 
         label = structure("die Flaeche der Box", html = TRUE, class = c("html", 
         "character")), correct = FALSE, message = NULL, type = "literal"), class = c("tutorial_question_answer", 
@@ -1761,7 +1761,7 @@ learnr:::question_prerendered_chunk(structure(list(type = "learnr_radio", label
     "character")), message = NULL, post_message = NULL), ids = list(
         answer = "quiz-ggplot-3-answer", question = "quiz-ggplot-3"), 
     loading = NULL, random_answer_order = FALSE, allow_retry = FALSE, 
-    seed = 842340500.607755, options = list()), class = c("learnr_radio", 
+    seed = 763240019.144589, options = list()), class = c("learnr_radio", 
 "tutorial_question")), session = session)
 </script>
 
@@ -1769,15 +1769,15 @@ learnr:::question_prerendered_chunk(structure(list(type = "learnr_radio", label
 <script type="application/shiny-prerendered" data-context="server">
 learnr:::question_prerendered_chunk(structure(list(type = "learnr_radio", label = "quiz-ggplot-4", 
     question = structure("An was erkennt man im Diagramm die Ausreißer?", html = TRUE, class = c("html", 
-    "character")), answers = list(structure(list(id = "lnr_ans_f6a0d3b", 
+    "character")), answers = list(structure(list(id = "lnr_ans_ad6f2aa", 
         option = "es sind Punkte außerhalb der Box", value = "es sind Punkte außerhalb der Box", 
         label = structure("es sind Punkte außerhalb der Box", html = TRUE, class = c("html", 
         "character")), correct = TRUE, message = NULL, type = "literal"), class = c("tutorial_question_answer", 
-    "tutorial_quiz_answer")), structure(list(id = "lnr_ans_9258649", 
+    "tutorial_quiz_answer")), structure(list(id = "lnr_ans_f0a0c56", 
         option = "an der Größe der Box", value = "an der Größe der Box", 
         label = structure("an der Größe der Box", html = TRUE, class = c("html", 
         "character")), correct = FALSE, message = NULL, type = "literal"), class = c("tutorial_question_answer", 
-    "tutorial_quiz_answer")), structure(list(id = "lnr_ans_7e89b93", 
+    "tutorial_quiz_answer")), structure(list(id = "lnr_ans_b4b7bc9", 
         option = "durch schlechtes Verhalten", value = "durch schlechtes Verhalten", 
         label = structure("durch schlechtes Verhalten", html = TRUE, class = c("html", 
         "character")), correct = FALSE, message = NULL, type = "literal"), class = c("tutorial_question_answer", 
@@ -1789,7 +1789,7 @@ learnr:::question_prerendered_chunk(structure(list(type = "learnr_radio", label
     "character")), message = NULL, post_message = NULL), ids = list(
         answer = "quiz-ggplot-4-answer", question = "quiz-ggplot-4"), 
     loading = NULL, random_answer_order = FALSE, allow_retry = FALSE, 
-    seed = 947573703.558752, options = list()), class = c("learnr_radio", 
+    seed = 1148582026.96515, options = list()), class = c("learnr_radio", 
 "tutorial_question")), session = session)
 </script>