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1.1       matthew     1: \label{Statistics_Sequence}
                      2: 
1.3       felicia     3: The \textbf{Overall Problem Statistics} page lets you view performance 
                      4: statistics on all problems.  This page displays the following 
                      5: data about the \textbf{Folders/Sequences} selected for evaluation:
1.1       matthew     6: 
                      7: \begin{itemize}
                      8: 
1.2       albertel    9: \item \textbf{\#Items}
1.1       matthew    10: 
                     11: The number of assessment items (problem parts) in the sequence.
                     12: 
                     13: \item \textbf{Score} and \textbf{Count} Statistics
                     14: 
1.4     ! webbsuza   15: For the score, the product of the problem weight, the percent awarded,
        !            16: the count, and the number of problem parts correct, the following data are 
1.1       matthew    17: computed:
                     18: 
                     19: \begin{itemize}
                     20:     \item \textbf{MEAN}
                     21: 
                     22:     \item \textbf{Standard Deviation}
                     23: 
                     24:     \item \textbf{Maximum}
                     25: 
                     26:     The highest achieved score or count in the data set.
                     27: 
                     28:     \item \textbf{Minimum}
                     29: 
                     30:     The lowest achieved score or count in the data set.
                     31: 
                     32:     \item \textbf{N}
                     33: 
                     34:     The number of students evaluated.
                     35: 
                     36: \end{itemize}
                     37: 
                     38: \item \textbf{KR-21}
                     39: 
                     40: This statistic measures the internal reliability of the data set.
                     41: \textbf{This statistic is relevant for exams only.}  Let $K$ be the
                     42: number of items in your test, $M$ the mean score on the test, $s$ the
                     43: standard deviation of the scores on your test, then the KR-21
                     44: statistic, $rk$, is given by the formula
                     45: 
                     46: $$ rk=\frac{K}{K-1}\cdot \frac{1-(M*(K-M))}{Ks^2} $$
                     47: 
                     48: \end{itemize}
1.3       felicia    49: 
                     50: You have the option to have this statistical data output to an Excel file. \\
                     51: 
                     52: Clicking on the problem name will open a view of the problem in a separate window.