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Debugged question types NUMERICAL and MULTIANSWER (known as embedded …
…answers) as these did not do things right whenever a student had not given any response (was treated as zero etc). For numerical there was also a need to allow typical shortanswer responses whenever there could be answers like n/a, inf, -inf, nan etc. Further more about numerical, there can be more than one answer alternative defined (just like for shortanswer). This is not supported by numerical.html but everywhere else. MULTIANSWER included, it is up to any taker to update numerical.html. This is more than likely to lead to overlappings between numerical ranges if more than one is defined. Think of the case where the highest grade answer ranges between 0 and 2 and the half grade answer ranges between 2 and 4. How should we grade 2? We should pick the highest grade!
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