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1.1     ! matthew     1: \label{Statistics_Sequence}
        !             2: 
        !             3: The \textbf{Overall Problem Statistics} page displays the following 
        !             4: data about the \textbf{Sequences} selected for evaluation:
        !             5: 
        !             6: \begin{itemize}
        !             7: 
        !             8: \item \textbf{#Items}
        !             9: 
        !            10: The number of assessment items (problem parts) in the sequence.
        !            11: 
        !            12: \item \textbf{Score} and \textbf{Count} Statistics
        !            13: 
        !            14: For both the score, the product of the problem weight and the percent awarded,
        !            15: and the count, the number of problem parts correct, the following data are 
        !            16: computed:
        !            17: 
        !            18: \begin{itemize}
        !            19:     \item \textbf{MEAN}
        !            20: 
        !            21:     \item \textbf{Standard Deviation}
        !            22: 
        !            23:     \item \textbf{Maximum}
        !            24: 
        !            25:     The highest achieved score or count in the data set.
        !            26: 
        !            27:     \item \textbf{Minimum}
        !            28: 
        !            29:     The lowest achieved score or count in the data set.
        !            30: 
        !            31:     \item \textbf{N}
        !            32: 
        !            33:     The number of students evaluated.
        !            34: 
        !            35: \end{itemize}
        !            36: 
        !            37: \item \textbf{KR-21}
        !            38: 
        !            39: This statistic measures the internal reliability of the data set.
        !            40: \textbf{This statistic is relevant for exams only.}  Let $K$ be the
        !            41: number of items in your test, $M$ the mean score on the test, $s$ the
        !            42: standard deviation of the scores on your test, then the KR-21
        !            43: statistic, $rk$, is given by the formula
        !            44: 
        !            45: $$ rk=\frac{K}{K-1}\cdot \frac{1-(M*(K-M))}{Ks^2} $$
        !            46: 
        !            47: \end{itemize}