diff --git a/statistics/lecture/charging_curve.pdf b/statistics/lecture/figures/charging_curve.pdf
similarity index 100%
rename from statistics/lecture/charging_curve.pdf
rename to statistics/lecture/figures/charging_curve.pdf
diff --git a/statistics/lecture/lin_regress.pdf b/statistics/lecture/figures/lin_regress.pdf
similarity index 100%
rename from statistics/lecture/lin_regress.pdf
rename to statistics/lecture/figures/lin_regress.pdf
diff --git a/statistics/lecture/lin_regress_abscissa.pdf b/statistics/lecture/figures/lin_regress_abscissa.pdf
similarity index 100%
rename from statistics/lecture/lin_regress_abscissa.pdf
rename to statistics/lecture/figures/lin_regress_abscissa.pdf
diff --git a/statistics/lecture/lin_regress_slope.pdf b/statistics/lecture/figures/lin_regress_slope.pdf
similarity index 100%
rename from statistics/lecture/lin_regress_slope.pdf
rename to statistics/lecture/figures/lin_regress_slope.pdf
diff --git a/statistics/lecture/linear_least_squares.pdf b/statistics/lecture/figures/linear_least_squares.pdf
similarity index 100%
rename from statistics/lecture/linear_least_squares.pdf
rename to statistics/lecture/figures/linear_least_squares.pdf
diff --git a/statistics/lecture/one_d_problem_a.pdf b/statistics/lecture/figures/one_d_problem_a.pdf
similarity index 100%
rename from statistics/lecture/one_d_problem_a.pdf
rename to statistics/lecture/figures/one_d_problem_a.pdf
diff --git a/statistics/lecture/one_d_problem_b.pdf b/statistics/lecture/figures/one_d_problem_b.pdf
similarity index 100%
rename from statistics/lecture/one_d_problem_b.pdf
rename to statistics/lecture/figures/one_d_problem_b.pdf
diff --git a/statistics/lecture/one_d_problem_c.pdf b/statistics/lecture/figures/one_d_problem_c.pdf
similarity index 100%
rename from statistics/lecture/one_d_problem_c.pdf
rename to statistics/lecture/figures/one_d_problem_c.pdf
diff --git a/statistics/lecture/surface.pdf b/statistics/lecture/figures/surface.pdf
similarity index 100%
rename from statistics/lecture/surface.pdf
rename to statistics/lecture/figures/surface.pdf
diff --git a/statistics/lecture/linear_regression.tex b/statistics/lecture/linear_regression.tex
index 6eb6658..2448f16 100644
--- a/statistics/lecture/linear_regression.tex
+++ b/statistics/lecture/linear_regression.tex
@@ -120,7 +120,7 @@
   \begin{columns}
     \begin{column}{6.25cm}
       \begin{figure}
-        \includegraphics[width=1.\columnwidth]{one_d_problem_a.pdf}
+        \includegraphics[width=1.\columnwidth]{figures/one_d_problem_a.pdf}
       \end{figure}
     \end{column}
     \begin{column}{6.5cm}
@@ -144,7 +144,7 @@
     \begin{columns}
       \begin{column}{4.5cm}
         \begin{figure}
-          \includegraphics[width=1.\columnwidth]{one_d_problem_b.pdf}
+          \includegraphics[width=1.\columnwidth]{figures/one_d_problem_b.pdf}
         \end{figure}
       \end{column}
       \begin{column}{8cm}
@@ -161,7 +161,7 @@
   \begin{columns}
       \begin{column}{4.5cm}
         \begin{figure}
-          \includegraphics[width=1.\columnwidth]{one_d_problem_c.pdf}
+          \includegraphics[width=1.\columnwidth]{figures/one_d_problem_c.pdf}
         \end{figure}
       \end{column}
       \begin{column}{8cm}
@@ -182,7 +182,7 @@
   \framesubtitle{Lineare Regression}
   \only<1-2> {
     \begin{figure}
-      \includegraphics[width=0.45\columnwidth]{lin_regress.pdf}
+      \includegraphics[width=0.45\columnwidth]{figures/lin_regress.pdf}
     \end{figure}
   }
   \only<2>{
@@ -192,13 +192,13 @@
   \only<3> {
     Ver\"anderung der Steigung:
     \begin{figure}
-      \includegraphics[width=0.45\columnwidth]{lin_regress_slope.pdf}
+      \includegraphics[width=0.45\columnwidth]{figures/lin_regress_slope.pdf}
     \end{figure}
   }
   \only<4> {
   Ver\"anderung des y-Achsenabschnitts:
   \begin{figure}
-      \includegraphics[width=0.45\columnwidth]{lin_regress_abscissa.pdf}
+      \includegraphics[width=0.45\columnwidth]{figures/lin_regress_abscissa.pdf}
     \end{figure}
   }
 \end{frame}
@@ -216,7 +216,7 @@
   \begin{columns}
     \begin{column}{4.5cm}
       \begin{figure}
-        \includegraphics[width=\columnwidth]{linear_least_squares.pdf}
+        \includegraphics[width=\columnwidth]{figures/linear_least_squares.pdf}
       \end{figure}
       \footnotesize{\url{http://en.wikipedia.org/wiki/Linear_least_squares_(mathematics)}}
     \end{column}
@@ -261,7 +261,7 @@
     \end{column}
     \begin{column}{5.5cm}
       \begin{figure}
-        \includegraphics[width=0.9\columnwidth]{surface.pdf}
+        \includegraphics[width=0.9\columnwidth]{figures/surface.pdf}
       \end{figure}
     \end{column}
   \end{columns}
@@ -413,7 +413,7 @@
   \begin{columns}
     \begin{column}{6cm}
       \begin{figure}
-        \includegraphics[width=1\columnwidth]{charging_curve.pdf}
+        \includegraphics[width=1\columnwidth]{figures/charging_curve.pdf}
       \end{figure}
     \end{column}
     \begin{column}{7cm}