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Fri Aug 29 21:08:40 2003 UTC (20 years, 11 months ago) by
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New spreadsheet help files.
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:
11: The spreadsheet has a preprocessor which an expand a symbolic
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:
17: \texttt{\&EXPANDSUM(}\texttt{\textbf{PART}}\texttt{;parameter\_}\texttt{\textbf{PART}}\texttt{\_weight{*}stores\_}\texttt{\textbf{PART}}\texttt{\_awarded)}
18:
19: would become
20:
21: \texttt{parameter\_0\_weight{*}stores\_0\_awarded +}~\\
22: \texttt{parameter\_11\_weight{*}stores\_11\_awarded +}~\\
23: \texttt{parameter\_12\_weight{*}stores\_12\_awarded +}~\\
24: \texttt{parameter\_13\_weight{*}stores\_13\_awarded +}~\\
25:
26: where \textbf{bolded text} is used to highlight what the
27: \texttt{\&EXPANDSUM} function is doing.
28:
29: \textbf{What 'tries' means}
30:
31: In multi-part questions, the exported value for "tries"\index{tries} is now
32: the average number of tries to get the parts right.
33: The full data for each part is still stored by the system.
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