To get submission quality scores, the feedback rubric needs to have at least one evaluation criteria that is either Yes/No or Scale.
After the peer review session is over for an assignment, each submission receives a 'Submission quality score'. This score is between 0% and 100% depending on how well the peers evaluated the submission.
The way the total submission score is calculated for a submission is by averaging the scores from each of the peers. The score from an individual peer evaluating a submission is obtained by averaging over the criteria in the feedback rubric.
The numerical score for each criteria is normalised to be between 0% and 100%, where 0% is given for the worst possible answer, and 100% for the best possible answer. As an example, in a Scale-question with 5 levels, the different answers will count 0%, 25%, 50%, 75%, 100%.