For conveniences sake, this is what has been added. Hopefully this will help enlighten everyone. :)
Please note
Canon house stereotypes do not apply here. There were no character values set on each house. Students are not sorted into Gryffindor because they are brave, they are sorted there because they are good with weapons. Students are not sorted into Slytherin because they're cunning and ambitious, they're put there if they are patient and strong-minded.
Aptitude Test
Think 'career aptitude test'. The test is a combination written and physical exam that gauges the student's interests, physical prowess, and areas in which they excel.
They are asked to answer several questions in regard to their personality, their goals, desires, and aspirations. It is not an 'intelligence' test in any base sense. They aren't working figures or writing essays. They're telling the instructors, through the questions, what they want to do with the rest of their career at school.
While a student's personality is taken into account, it is not a determining factor in house placement. If they are good with weapons and want to fight, they're Gryffindors. If they're patient and strong-minded, or training to use elemental magic in combat, they're Slytherins. If they're bright and have a knack for academics or a mind for strategy, or are training in animal magic, they're Ravenclaws. If they're more hands-on in a general sense, or lack a desire to be front-lines combat, they will be a Hufflepuff. Bravery, cunning, determination, and wit, have nothing to do with what house they land in.