File:
[LON-CAPA] /
loncom /
html /
adm /
help /
tex /
Spreadsheet_HowTo_Assessments.tex
Revision
1.6:
download - view:
text,
annotated -
select for diffs
Sun Aug 28 20:35:37 2016 UTC (7 years, 11 months ago) by
raeburn
Branches:
MAIN
CVS tags:
version_2_12_X,
version_2_11_X,
version_2_11_5_msu,
version_2_11_5,
version_2_11_4_uiuc,
version_2_11_4_msu,
version_2_11_4,
version_2_11_3_uiuc,
version_2_11_3_msu,
version_2_11_3,
version_2_11_2_uiuc,
version_2_11_2_msu,
version_2_11_2_educog,
version_2_11_2,
HEAD
- Revert some of the changes in rev 1.5.
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 may have parts 0, 11, 12, and 13, where
7: part 0, is the part ID reserved for the problem as a whole. For a
8: general spreadsheet, it is often desirable to sum up all of these
9: parts, while not knowing how many parts there are as the spreadsheet
10: is written.
11:
12: The spreadsheet has a preprocessor which can expand a symbolic
13: expression over all symbolic names that match. The general syntax is
14: \index{EXPANDSUM} \texttt{[\&EXPANDSUM(VARNAME;expression)]}.
15:
16: \noindent
17: For example, for the above assessment with three parts,\\
18:
19: \noindent
20: \texttt{\&EXPANDSUM(}\texttt{\textbf{PART}}\texttt{;parameter\_}\texttt{\textbf{PART}}\texttt{\_weight{*}stores\_}\texttt{\textbf{PART}}\texttt{\_awarded)}\\
21:
22: \noindent
23: would become\\
24:
25: \noindent
26: \texttt{parameter\_0\_weight{*}stores\_0\_awarded +}~\\
27: \texttt{parameter\_11\_weight{*}stores\_11\_awarded +}~\\
28: \texttt{parameter\_12\_weight{*}stores\_12\_awarded +}~\\
29: \texttt{parameter\_13\_weight{*}stores\_13\_awarded +}~\\
30: where \textbf{bolded text} is used to highlight (PDF version of manual excluded) what the \texttt{\&EXPANDSUM} function is doing.\\
31:
32:
33: \noindent
34: \textbf{What `tries' means}
35:
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:
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>