diff --git a/bootstrap/lecture/bootstrap-slides.tex b/bootstrap/lecture/bootstrap-slides.tex
index fbe540c..31e5655 100644
--- a/bootstrap/lecture/bootstrap-slides.tex
+++ b/bootstrap/lecture/bootstrap-slides.tex
@@ -1,10 +1,10 @@
 \documentclass{beamer}
 
 %%%%% title %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-\title[]{Scientific Computing --- Bootstrap methods}
+\title[]{Bootstrap Methods}
 \author[]{Jan Benda}
 \institute[]{Neuroethology}
-\date[]{WS 16/17}
+\date[]{WS 17/18}
 \titlegraphic{\includegraphics[width=0.3\textwidth]{UT_WBMW_Rot_RGB}}
 
 %%%%% beamer %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -85,7 +85,25 @@
   \titlepage % erzeugt Titelseite
 \end{frame}
 
-\subsection{Bootstrap distribution}
+
+%\subsection{Population}
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\begin{frame}
+  \frametitle{Statistics: what we want to know}
+  \includegraphics[width=1\textwidth]{2012-10-29_16-26-05_771}\\[2ex]
+\end{frame}
+
+\begin{frame}
+  \frametitle{Let's measure the whole population ...}
+  \includegraphics[width=1\textwidth]{2012-10-29_16-41-39_523}\\[2ex]
+\end{frame}
+
+\begin{frame}
+  \frametitle{We can only measure a sample of the population}
+  \includegraphics[width=1\textwidth]{2012-10-29_16-29-35_312}
+\end{frame}
+
+%\subsection{Bootstrap distribution}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \begin{frame}
   \frametitle{Sampling distribution}
@@ -106,5 +124,19 @@
   \end{itemize}
 \end{frame}
 
+%\subsection{Bootstrap distribution}
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\begin{frame}
+  \frametitle{Sampling and bootstrap distribution of the mean}
+  \includegraphics[width=1\textwidth]{bootstrapsem}
+\end{frame}
+
+%\subsection{Permutation test}
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\begin{frame}
+  \frametitle{Permutation test}
+  \includegraphics[width=1\textwidth]{permutecorrelation}
+\end{frame}
+
 \end{document}