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edits for compatability with 2.11

\label{Authoring_Surveys}
\index{surveys}

Surveys are created by authoring a conventional problem, such as a Radio button or Option problem.
During the authoring process, you will need to select one of the foils as {}``correct''. Which 
foil is set to {}``correct'' will not matter, however;
that setting will be ignored when you implement the survey.

Within the course environment, to add a survey to the course, insert the ``problem'', and
then set the parameter for \textbf{``Question Type''} to ``Survey'', ``Survey with Credit'', or 
``Anonymous Survey''.
To evaluate the survey, you will perform analysis using Reports =\textgreater Survey Results or 
Statistics and Analysis =\textgreater Detailed Problem Analysis. 

The results examined with either tool will be displayed sorted by foil name, 
so take some care while authoring to
name the foils. For example ``Foil10'' appears before ``Foil2'' alphabetically, so your survey may easier
to interpret if you insert a zero before single digits, such as ``Foil02'' and ``Foil10'' which will
sort as expected.