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version 1.6, 2016/08/28 20:35:37
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\textbf{How to deal with multi-part problems} |
\textbf{How to deal with multi-part problems} |
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Often, there are several parts in a specific problem. For example, a |
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 |
problem with three parts may have parts 0, 11, 12, and 13, where |
general spreadsheet, it is not often desirable to sum up all of these |
part 0, is the part ID reserved for the problem as a whole. For a |
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general spreadsheet, it is often desirable to sum up all of these |
parts, while not knowing how many parts there are as the spreadsheet |
parts, while not knowing how many parts there are as the spreadsheet |
is written. |
is written. |
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The spreadsheet has a preprocessor which can expand a symbolic |
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)]}. |
\index{EXPANDSUM} \texttt{[\&EXPANDSUM(VARNAME;expression)]}. |
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For example, for the above assessment with three parts, |
\noindent |
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For example, for the above assessment with three parts,\\ |
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\noindent |
\texttt{\&EXPANDSUM(}\texttt{\textbf{PART}}\texttt{;parameter\_}\texttt{\textbf{PART}}\texttt{\_weight{*}stores\_}\texttt{\textbf{PART}}\texttt{\_awarded)}\\ |
\texttt{\&EXPANDSUM(}\texttt{\textbf{PART}}\texttt{;parameter\_}\texttt{\textbf{PART}}\texttt{\_weight{*}stores\_}\texttt{\textbf{PART}}\texttt{\_awarded)}\\ |
would become |
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\noindent |
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would become\\ |
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\noindent |
\texttt{parameter\_0\_weight{*}stores\_0\_awarded +}~\\ |
\texttt{parameter\_0\_weight{*}stores\_0\_awarded +}~\\ |
\texttt{parameter\_11\_weight{*}stores\_11\_awarded +}~\\ |
\texttt{parameter\_11\_weight{*}stores\_11\_awarded +}~\\ |
\texttt{parameter\_12\_weight{*}stores\_12\_awarded +}~\\ |
\texttt{parameter\_12\_weight{*}stores\_12\_awarded +}~\\ |
\texttt{parameter\_13\_weight{*}stores\_13\_awarded +}~\\ |
\texttt{parameter\_13\_weight{*}stores\_13\_awarded +}~\\ |
where \textbf{bolded text} is used to highlight what the |
where \textbf{bolded text} is used to highlight (PDF version of manual excluded) what the \texttt{\&EXPANDSUM} function is doing.\\ |
\texttt{\&EXPANDSUM} function is doing. |
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\noindent |
\noindent |
\textbf{What 'tries' means} |
\textbf{What `tries' means} |
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In multi-part questions, the exported value for ``tries''\index{tries} is |
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the average number of tries to get the parts correct. |
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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}). |
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In multi-part questions, the exported value for "tries"\index{tries} is now |
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the average number of tries to get the parts right. |
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The full data for each part is still stored by the system. |
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