[Tex/LaTex] Put bullets in a block inside itemize environment

Question

I am trying to insert bullet in a block, but these bullets appear outside this block. This is probably due to the fact that the block is inside an itemize environment. Is there a way to do it?

My code is:

\documentclass{beamer}
\usefonttheme{professionalfonts}
\setbeamertemplate{itemize items}[ball]

\begin{document}
\begin{frame}
\frametitle{Estimation problem}
\begin{overlayarea}{\textwidth}{\textheight}
 \begin{itemize}
\item  In finance it is a common to consider a parametric model for pricing 
derivatives and then estimate its parameters to the historical market data.
\medskip
\item  However, this practice raises some questions about its effectiveness 
and implications.
\medskip
\begin{block}{Related questions}
\medskip
\item How the best-fitting parameters' set is treated after the estimation? 
\\
\medskip
\item Does the estimation error affect financial decisions? \\
\medskip
\item How frequently does the parametric model need to be estimated?
\medskip
\end{block}
\item Our work aims to give answers to these questions and outlines an 
alternative solution
\end{itemize}
\end{overlayarea}
\end{frame}

\end{document}

Answer 1

• your mwe doesn't generate your image
• the simple way to resolve your problem is break itemize in three parts as follows:

\documentclass{beamer}
\usefonttheme{professionalfonts}
\setbeamertemplate{itemize items}[ball]
%
\setbeamercolor{block title}{fg=white, bg=blue!70!black}
\setbeamercolor{block body}{fg=black, bg=gray!20}
\setbeamertemplate{blocks}[rounded][shadow=true]

\begin{document}
\begin{frame}
\frametitle{Estimation problem}
%\begin{overlayarea}{\textwidth}{\textheight}
    \begin{itemize}
\item  In finance it is a common to consider a parametric model for pricing
derivatives and then estimate its parameters to the historical market data.
\item  However, this practice raises some questions about its effectiveness
and implications.
    \end{itemize}

\begin{block}{Related questions}
    \begin{itemize}
\item How the best-fitting parameters' set is treated after the estimation?
\item Does the estimation error affect financial decisions?
\item How frequently does the parametric model need to be estimated?
    \end{itemize}
\end{block}

    \begin{itemize}
\item Our work aims to give answers to these questions and outlines an
alternative solution
    \end{itemize}
%\end{overlayarea}
\end{frame}

\end{document}

from above code you can see, that i remove all \medskip and termination of items with \\ (they are superfluous).