diff --git a/semester4/ps/ps-jh/parts/03_expected-value/02_cont.tex b/semester4/ps/ps-jh/parts/03_expected-value/02_cont.tex
index 0974e88..dc3c96a 100644
--- a/semester4/ps/ps-jh/parts/03_expected-value/02_cont.tex
+++ b/semester4/ps/ps-jh/parts/03_expected-value/02_cont.tex
@@ -6,8 +6,6 @@
 \shortlemma[Int über gauss. Glockenk.] $\int_{-\8}^{\8} e^{\frac{-x^2}{2\sigma^2}} \dx x = \sqrt{2 \pi \sigma^2}$
 
 \subsubsection{Beispiele}
-% TODO: Consider if need derivation of them here and prev section as well
-% TODO: Also add the ones proven in exercises
 \begin{itemize}
     \item $\cX \sim \cU([a, b])$, $a < b$: $\E[\cX] = \frac{a + b}{2}$
     \item $\cX \sim \text{Exp}(\lambda)$, $\lambda > 0$: $\E[\cX] = \frac{1}{\lambda}$
diff --git a/semester4/ps/ps-jh/parts/06_estimators/02_max-likelihood.tex b/semester4/ps/ps-jh/parts/06_estimators/02_max-likelihood.tex
index 23a1e22..7091bcb 100644
--- a/semester4/ps/ps-jh/parts/06_estimators/02_max-likelihood.tex
+++ b/semester4/ps/ps-jh/parts/06_estimators/02_max-likelihood.tex
@@ -40,7 +40,7 @@ Meistens sind $\cX_k$ i.i.d. unter $\P_\vartheta$, dann $L$ produkt, also besser
 \begin{enumerate}
     \item log-LH-Funk. bestimmen ($x_i$ statt $\cX_i$ verwenden)
     \item Nach $\vartheta$ ableiten (oder wodurch $\vartheta$ ersetzt wurde)
-    \item Nullstelle davon berechnen
+    \item Nullstelle davon berechnen (für Max (via e.g. $f'' < 0$))
     \item ML-Schätzer ist dann Nullstelle von Ableitung (mit $x_i$ wieder durch $\cX_i$ ersetzt)
 \end{enumerate}
 
diff --git a/semester4/ps/ps-jh/probability-and-statistics-cheatsheet.pdf b/semester4/ps/ps-jh/probability-and-statistics-cheatsheet.pdf
index 85966bc..fbe238b 100644
Binary files a/semester4/ps/ps-jh/probability-and-statistics-cheatsheet.pdf and b/semester4/ps/ps-jh/probability-and-statistics-cheatsheet.pdf differ