--- loncom/html/adm/help/tex/Spreadsheet_HowTo_Assessments.tex 2015/12/26 04:35:17 1.4 +++ loncom/html/adm/help/tex/Spreadsheet_HowTo_Assessments.tex 2016/01/03 04:51:10 1.5 @@ -3,29 +3,37 @@ \textbf{How to deal with multi-part problems} Often, there are several parts in a specific problem. For example, a -problem with three parts would have parts 0, 11, 12, and 13. For a -general spreadsheet, it is not often desirable to sum up all of these +problem with four parts may have parts 0, 11, 12, and 13. For a +general spreadsheet, it is often desirable to sum up all of these parts, while not knowing how many parts there are as the spreadsheet is written. The spreadsheet has a preprocessor which can expand a symbolic -expression over all symbolic names that fit. The general syntax is +expression over all symbolic names that match. The general syntax is \index{EXPANDSUM} \texttt{[\&EXPANDSUM(VARNAME;expression)]}. -For example, for the above assessment with three parts, +\noindent +For example, for the above assessment with four parts,\\ +\noindent \texttt{\&EXPANDSUM(}\texttt{\textbf{PART}}\texttt{;parameter\_}\texttt{\textbf{PART}}\texttt{\_weight{*}stores\_}\texttt{\textbf{PART}}\texttt{\_awarded)}\\ -would become + +\noindent +would become\\ + +\noindent \texttt{parameter\_0\_weight{*}stores\_0\_awarded +}~\\ \texttt{parameter\_11\_weight{*}stores\_11\_awarded +}~\\ \texttt{parameter\_12\_weight{*}stores\_12\_awarded +}~\\ \texttt{parameter\_13\_weight{*}stores\_13\_awarded +}~\\ -where \textbf{bolded text} is used to highlight what the -\texttt{\&EXPANDSUM} function is doing. +% bold does not show +% where \textbf{bolded text} is used to highlight what the \texttt{\&EXPANDSUM} function is doing. + \noindent \textbf{What `tries' means} -In multi-part questions, the exported value for ``tries''\index{tries} is now -the average number of tries to get the parts right. -The full data for each part is still stored by the system. +In multi-part questions, the exported value for ``tries''\index{tries} is +the average number of tries to get the parts correct. +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}). +