Using raw scores in the grade book

Using raw scores in the grade book

by Pan-hang Tang -
Number of replies: 0
"The grades are first converted to percentage values (interval from 0 to 1), then aggregated ..." {https://docs.moodle.org/31/en/Grade_aggregation}. 

Could we use the raw scores in the gradebook without converting to percentage value?

I have set a competition for students and want to set the rule as these:

Points

                  Correct answer     Wrong answer

Question 1   1000 points           0 points
Question 2    2000 points    deduct 1000 points
Question 3    3500 points    deduct 2500 points

I have put an option for students to choose whether they want to answer the next question or not.

But there is a problem:

Student A gives a correct answer for question 1 and so she gets 1000pts. She stops and so her final scores is 1000 out of 1000.

Student B answers all questions. Question 1 correct, question 2 incorrect and question 3 correct. So she has (1000 - 1000 + 3500) = 3500pts. Since she has completed all three questions, so her grade is 3500 out of 6500.

Student B should have a higher marks than student A, but since moodle converts the scores into percentage, Student A will get 100% correct in the gradebook. 

So, how could I use the raw score in the gradebook. 


Thank you.