Sometimes we are asked why the final percentage score on a Marlins English language test is not the mean average of the percentage score achieved in each section.
The reason is that the overall result is not calculated based on the average results in each section as a percentage, but on each section as a score.
For example: the Time and Numbers section is worth 5 points and the Listening section is worth 25 points.
If you got 1 question wrong in each topic your scores would be 4 out of 5 and 24 out of 25. Your percentage score for each section would be 80% and 96%.
Your overall score would be 93% (24 + 4 / 30) and not the average 88% (80 + 96 / 2).