WELCOME. Presentation slides can be downloaded from: http://www.rivervalleypri.moe.edu.sg. ?. ?. ?. PSLE. SEMINAR. PSLE T-Score Explained. OUTLINE. PSLE is a placement exam What is the PSLE Aggregate SCORE? Why is T-Score used? Definition & Calculation of T-Score
Presentation slides can be downloaded from: http://www.rivervalleypri.moe.edu.sg
Are they raw scores?
What is PSLE Aggregate Score?
It is a sum of scores.
Can raw scores be used?
(spread = standard deviation)
S P R E A D
I scored 85% in both English and Mother Tongue !
Dolly scores 85% in both EL and MT
A need for standardisation of the raw scores
ave = 60
ave = 80
T-Score converts average mark of each subject to a common score of 50 points. It also converts other marks taking into consideration the extent to which they differ from the average and the size of spread of the marks around the average
where X: pupil’s mark for the subjectY: average mark (mean) scored by all pupils Z: spread of marks around the average mark (standard deviation)
T = 50 + 10
By adding the T-Scores of
the 4 subjects
all pupils are ranked according to their Aggregate Scores
Is it possible for a pupil with 3A* and 1A to be ranked lower than another pupil who has only 1A* and 3As?
Yes, it is possible