I have an mchoice question in file 32_est_summary.Rmd in this public repo.
(I don't share the code here since it is a bit large and stack over flow policies don't allow me to publish the question with all the code)
The question renders without problem in html format using
exams2html("32_est_summary.Rmd",
converter = "pandoc-mathjax")
However, there is an issue when trying to export it as XML. In file 32_est_summary.Rmd line 36, I have a variable which controls the number of random generated false answers (nrep). If nrepis equal to 2, then I get the following error message:
Error in moodlePercent(frac) : Percentage not in list of moodle fractions
Is this normal? Is there any way to fix it?
In Moodle only certain percentage values are available for scoring a given item, namely:
exams:::moodleFractions
## [1] 100.00000 90.00000 83.33333 80.00000 75.00000 70.00000 66.66667
## [8] 60.00000 50.00000 40.00000 33.33333 30.00000 25.00000 20.00000
## [15] 16.66667 14.28571 12.50000 11.11111 10.00000 5.00000
Your item has 28 answer alternatives and thus there is a good chance that a percentage is required for scoring that is not available in the list above. Thus, you either need to reduce the number of answer alternatives or switch to a different question format.
In your case I would recommend to switch the extype to cloze and split up the exercise into subitems. For example, you have something like:
* El estimador del cuantil 0.5 es 64.22
* El estimador del cuantil 0.5 es 14.4832
* El estimador del cuantil 0.5 es 209.7624
* El estimador del cuantil 0.5 es 52.3775
* El estimador de la mediana es 64.22
* El estimador de la mediana es 209.7624
* El estimador de la mediana es 52.3775
* El estimador de la mediana es 77.2675
Either you can switch it to clozetype as schoice|schoice, i.e., two single-choice answer list with one correct solution each. Or you can switch that to clozetype as num|num with
* El estimador del cuantil 0.5 es:
* El estimador de la mediana es: