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\label{Statistics_Key}

The \textbf{Overall Problem Statistics} page displays the following 
data about the problems currently in the course:

\begin{itemize}

\item \textbf{#Stdnts}
Total number of students attempting the problem.

\item \textbf{Tries}
Total number of attempts to solve the problem.

\item \textbf{Max Tries}
Largest number of to solve the problem by a student.

\item \textbf{Mean Tries}
Average number of tries.

\item \textbf{S.D. tries}
Standard Deviation of the tries.

\item \textbf{Skew Tries}
Skewness of the students tries.
\[\frac{\sqrt{ \sum{(Xi - Mean)^3} / #Stdnts}}{\sigma^3}\]

\item \textbf{DoDiff}
Degree of Difficulty of the problem.  
\[ 1 - \frac{\#YES+\#yes}{Tries} \]

\item \textbf{#YES}
Number of students who solved the problem correctly.

\item \textbf{#yes}
Number of students who solved the problem by override.

\item \textbf{\%Wrng}
Percentage of students who tried to solve the problem but were unable to.


\end{itemize}