Perfect. Thanks Stuart!
I had actually come up with a much less elegant workaround that is working but
this is much better.
Doug
Douglas Mills
Director of Instructional Technology
Department of Chemistry
University of Illinois
On 3/21/19, 11:39 AM, "Raeburn, Stuart" <raeb...@msu.edu> wrote:
Doug,
Yes, you can assign a score of 0 to the six customresponse items which you
simply use as placeholders.
So for those six return (ASSIGNED_SCORE,0) for each.
Then for the customresponse item for which you actually check submissions
do:
if($submission eq "12|3"){return (ASSIGNED_SCORE,7)}; #12|3 means all words
found and no hints used, etc.
if($submission eq "12|2"){return (ASSIGNED_SCORE,98/15)};
if($submission eq "12|1"){return (ASSIGNED_SCORE,91/15)};
if($submission eq "12|0"){return (ASSIGNED_SCORE,84/15)};
In this case, if 12|1 is submitted, the value assigned to
resource.$id.awarded will be:
(91/15 + 0 + 0 + 0 + 0 + 0 + 0)/7
which will be 13/15, which when you apply a weight of 5 will become:
4.33333333, as desired.
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: Thursday, March 21, 2019 12:03 PM
To: Discussion list for LON-CAPA users
Cc: Mills, Douglas G
Subject: Re: [LON-CAPA-users] assigned_score and unexpected results
Ok, so re-reading Stuart's response I see why assigning scores of 0 to the
6 irrelevant responses doesn't solve the problem (but in fact makes it worse)
-- the sum total of all responses in the part is 1, so there is no way to make
the value of one out of 7 responses equal to 1/5 the points... All becoming
clearer now. Thank you.
Doug
Douglas Mills
Director of Instructional Technology
Department of Chemistry
University of Illinois
On 3/20/19, 9:40 PM, "Mills, Douglas G" <dmi...@illinois.edu> wrote:
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
> _______________________________________________
> LON-CAPA-users mailing list
> LON-CAPA-users@mail.lon-capa.org
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