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1.1       matthew     1: \label{Spreadsheet_HowTo_Assessments}
                      2: 
                      3: \textbf{How to deal with multi-part problems}
                      4: 
                      5: Often, there are several parts in a specific problem. For example, a
1.5     ! lira        6: problem with four parts may have parts 0, 11, 12, and 13. For a
        !             7: general spreadsheet, it is often desirable to sum up all of these
1.1       matthew     8: parts, while not knowing how many parts there are as the spreadsheet
                      9: is written.
                     10: 
1.2       webbsuza   11: The spreadsheet has a preprocessor which can expand a symbolic
1.5     ! lira       12: expression over all symbolic names that match. The general syntax is
1.1       matthew    13: \index{EXPANDSUM} \texttt{[\&EXPANDSUM(VARNAME;expression)]}. 
                     14: 
1.5     ! lira       15: \noindent
        !            16: For example, for the above assessment with four parts,\\
1.1       matthew    17: 
1.5     ! lira       18: \noindent
1.3       riegler    19: \texttt{\&EXPANDSUM(}\texttt{\textbf{PART}}\texttt{;parameter\_}\texttt{\textbf{PART}}\texttt{\_weight{*}stores\_}\texttt{\textbf{PART}}\texttt{\_awarded)}\\
1.5     ! lira       20: 
        !            21: \noindent
        !            22: would become\\
        !            23: 
        !            24: \noindent
1.1       matthew    25: \texttt{parameter\_0\_weight{*}stores\_0\_awarded +}~\\
                     26: \texttt{parameter\_11\_weight{*}stores\_11\_awarded +}~\\
                     27: \texttt{parameter\_12\_weight{*}stores\_12\_awarded +}~\\
                     28: \texttt{parameter\_13\_weight{*}stores\_13\_awarded +}~\\
1.5     ! lira       29: % bold does not show
        !            30: % where \textbf{bolded text} is used to highlight what the \texttt{\&EXPANDSUM} function is doing.
        !            31: 
1.1       matthew    32: 
1.3       riegler    33: \noindent
1.4       lira       34: \textbf{What `tries' means}
1.1       matthew    35: 
1.5     ! lira       36: In multi-part questions, the exported value for ``tries''\index{tries} is 
        !            37: the average number of tries to get the parts correct. 
        !            38: The full data for each part is still stored by the system. To assign partial credit based on number of tries, see the example in \textbf{Special Functions} (\ref{Spreadsheet_Functions}).
        !            39: