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Annotation of loncom/html/adm/help/tex/Spreadsheet_HowTo_Assessments.tex, revision 1.3

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
                      6: problem with three parts would have parts 0, 11, 12, and 13. For a
                      7: general spreadsheet, it is not often desirable to sum up all of these
                      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
1.1       matthew    12: expression over all symbolic names that fit. The general syntax is
                     13: \index{EXPANDSUM} \texttt{[\&EXPANDSUM(VARNAME;expression)]}. 
                     14: 
                     15: For example, for the above assessment with three parts,
                     16: 
1.3     ! riegler    17: \texttt{\&EXPANDSUM(}\texttt{\textbf{PART}}\texttt{;parameter\_}\texttt{\textbf{PART}}\texttt{\_weight{*}stores\_}\texttt{\textbf{PART}}\texttt{\_awarded)}\\
1.1       matthew    18: would become
                     19: \texttt{parameter\_0\_weight{*}stores\_0\_awarded +}~\\
                     20: \texttt{parameter\_11\_weight{*}stores\_11\_awarded +}~\\
                     21: \texttt{parameter\_12\_weight{*}stores\_12\_awarded +}~\\
                     22: \texttt{parameter\_13\_weight{*}stores\_13\_awarded +}~\\
                     23: where \textbf{bolded text} is used to highlight what the
                     24: \texttt{\&EXPANDSUM} function is doing.
                     25: 
1.3     ! riegler    26: \noindent
1.1       matthew    27: \textbf{What 'tries' means}
                     28: 
                     29: In multi-part questions, the exported value for "tries"\index{tries} is now 
                     30: the average number of tries to get the parts right. 
                     31: The full data for each part is still stored by the system.