Thanks Stuart. I knew I was missing something. I thought that the weight
parameter could be applied to individual responses like sig fig and tolerance
parameters can. However,
understanding what’s happening I think I can work things out to the outcome I’m
looking for.
OR the other 6 responses are also all customresponses. If I used assign_score
in each of those responses to give a score of zero, would the Lon-Capa assume
the answers are incorrect?
(The other answers are just storing data to restore the puzzle when the page
reloads, so are set up to always be correct.)
Thanks as always!
Doug
-sent from mobile-
> On Mar 20, 2019, at 8:59 PM, Raeburn, Stuart <raeb...@msu.edu> wrote:
>
> Doug,
>
> You stated: "... is a one-part problem with 7 customresponses", and "All of
> the other 6 customresponses are weighted at 0." Could you clarify how the
> "weighted at 0" is implemented?
>
> If the award is: "ASSIGNED_SCORE", then during grading LON-CAPA will loop
> over all the response items in the problem part, accumulate the awarded value
> for each, and then divide by the number of response items to calculate the
> value to store for resource.$id.awarded.
>
> The points shown with then be the weight * resource.$id.awarded. (Weights
> apply to problem parts).
>
> So, if you have 7 response items, and return (ASSIGNED_SCORE,1) for 6 of
> those, and return ASSIGNED_SCORE,13/15) for the seventh, then the value of
> resource.$id.awarded will be:
>
> (13/15 + 1 + 1 + 1 + 1 + 1 + 1 )/7
>
> which evaluates to: 0.9809524
>
> When multiplied by a weight of 5, the result is: 4.904762, which is what you
> were seeing in course context/
>
> Stuart Raeburn
> LON-CAPA Academic Consortium
>
> ________________________________________
> From: LON-CAPA-users <lon-capa-users-boun...@mail.lon-capa.org> on behalf of
> Mills, Douglas G <dmi...@illinois.edu>
> Sent: Wednesday, March 20, 2019 11:22 AM
> To: Discussion list for LON-CAPA users
> Cc: Mills, Douglas G
> Subject: [LON-CAPA-users] assigned_score and unexpected results
>
> Hi All,
>
> I have a word search activity implemented in Lon-Capa worth 5 course points
> if completed with no hints. There are 12 words to find plus 3 "starter
> points" that you can spend on 3 different hints for a total of 15 possible
> points. In the course parameters I've weighted the activity to 5 points. In
> the activity itself I've used assigned_score as follows:
>
> if($submission eq "12|3"){return (ASSIGNED_SCORE,15/15)}; #12|3 means all
> words found and no hints used, etc.
> if($submission eq "12|2"){return (ASSIGNED_SCORE,14/15)};
> if($submission eq "12|1"){return (ASSIGNED_SCORE,13/15)};
> if($submission eq "12|0"){return (ASSIGNED_SCORE,12/15)};
>
> My expectation then, for example, is that if I complete the puzzle using two
> hints, in the course I should see 4.333 points awarded. However, what I'm
> seeing in the course for that outcome is a score of 4.90476190476191 out of 5.
>
> The Word Search problem itself is a one-part problem with 7 customresponses;
> however, the score should be coming from only the customresponse with the
> assigned_score section shown above. All of the other 6 customresponses are
> weighted at 0.
>
> So what am I missing? Thanks!
>
> Doug
>
> Douglas Mills
> Director of Instructional Technology
> Department of Chemistry
> University of Illinois
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