By default, the not-acceptable plagiarism percentage for coding assessments at Mercer | Mettl is 60%, which means for candidates scoring 60% or above plagiarism percentage, the plagiarism parameter will be tagged as Not Acceptable while the rest will be Acceptable, and accordingly is displayed in the test reports.
In case an assessment contains more than one coding question, if the candidate has scored a plagiarism percentage of 60 or above in any one of the questions, the plagiarism parameter for that candidate will be tagged as Not Acceptable.
At Mercer | Mettl, we believe the power of customization should always lie in the hands of the customer, hence the Not-Acceptable Plagiarism Percentage for a particular assessment can be configured by our customers themselves.
The not-acceptable plagiarism percentage can be customized using the following steps:
1. Go to Coding Questions Settings available under the Advance Options when creating, editing or viewing an assessment.
Note: These settings are only available when there exists one or more Code Snippet Question in the assessment.
2. On clicking the Coding Questions Settings button, a pop-up containing several settings w.r.t coding questions in the assessment will open. One of these options is Plagiarism Check.
3. On enabling Plagiarism Check, a sub-option as Override Not-Acceptable Percentage for Plagiarism appears.
5. The value thus entered is now considered as the new threshold for not-acceptable plagiarism percentage for all candidate reports of that assessment i.e., candidates scoring a plagiarism percentage >= the new threshold value will be tagged as having a Not Acceptable plagiarism.
There can be certain cases when you must be careful while enabling and disabling the Override Not-Acceptable Percentage for Plagiarism Option.
“Override Not Acceptable Percentage for Plagiarism” cannot be enabled without enabling the “Plagiarism Check” for an assessment.
In case you enable the Override Not-Acceptable Percentage for Plagiarism option after test takers have attempted the test, the new changes in the Acceptable and Not Acceptable criteria for plagiarism in reports will reflect automatically.
In case, you disable Plagiarism Check for an Assessment, Override Not-Acceptable Percentage for Plagiarism will also be disabled automatically.
The Acceptable and Not Acceptable criteria for plagiarism in reports will reflect the system default value i.e., 60%.
Considering Override Not-Acceptable Percentage for Plagiarism was enabled for an assessment at first, but Plagiarism Check was disabled sometime later for the same assessment.
Now, if you enable plagiarism check again, the Override Not-Acceptable Percentage for Plagiarism used will be the system default value i.e., 60% unless you override it with another value.
But where will these changes be reflected?
The changes made w.r.t the not-acceptable plagiarism percentages will be reflected in the candidate reports.
Following mentioned are the labels a candidate's plagiarism percentage can be segregated into:
1. Not Acceptable: When a candidate’s plagiarism percentage is greater than equal to the not- acceptable plagiarism percentage. If not configured it is 60% by default.
2. Acceptable: When a candidate’s plagiarism percentage is less than the not-acceptable plagiarism percentage. If not configured it is 60% by default.
3. No Matches: When a candidate’s plagiarism percentage is 0% as no potential matches have been found for the candidate’s code.
4. NA: When plagiarism for a particular candidate has not been calculated because of one or more of the following reasons:
The candidate has scored zero marks.
The candidate has not written a substantial amount of code for plagiarism to be calculated upon.
Our algorithm does not support the language the candidate has coded in.
Plagiarism was not enabled when the report was generated.