|
发表于 16-9-2011 11:43:10|来自:贵州贵阳
|
显示全部楼层
The calculation of the subject T-score is based on the raw mark obtained [X], the average (mean) mark [m] and the spread of marks around the average mark (standard deviation) [s]. The following formula is used: T-scores=50+10*(x-m)/s |
|