## how to calculate t score

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## how to calculate t score

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**1**of**1**### how to calculate t score

if my son get the following resutls for psle on 2011，

english：79

math：98

science：95

mother tongue：92

what will be his aggregate score，and which secondary schools would he get to choose？

english：79

math：98

science：95

mother tongue：92

what will be his aggregate score，and which secondary schools would he get to choose？

- psle
- KiasuNewbie
**Posts:**2**Joined:**Tue May 08, 2012 8:07 pm**Total Likes:**0

### Re: how to calculate t score

psle wrote:if my son get the following resutls for psle on 2011，

english：79

math：98

science：95

mother tongue：92

what will be his aggregate score，and which secondary schools would he get to choose？

How is T-Score calculated for each subject?

We apply the following formula:

T=50+10 (X-Y)

Z

Where: X is the pupil’s mark for the subject

Y is the average mark (mean) scored by all the

pupils

Z is the spread of the marks around the

average mark (standard deviation)

http://www.sciencebuddies.com.sg/pdf/tscore.pdf

- Verysuperkiasu
- BlackBelt
**Posts:**901**Joined:**Thu Jul 07, 2011 9:39 pm**Total Likes:**0

### Re: how to calculate t score

i thought i saw there was a thread in KSP discussing about this

- fightingmom
- KiasuGrandMaster
**Posts:**6805**Joined:**Tue Apr 26, 2011 9:52 pm**Total Likes:**6

### Re: how to calculate t score

Thanks verysuperkiasu, can i know what average scores and standard deviation for 2011 is for 4 subjects?

- psle
- KiasuNewbie
**Posts:**2**Joined:**Tue May 08, 2012 8:07 pm**Total Likes:**0

### Re: how to calculate t score

psle wrote:Thanks verysuperkiasu, can i know what average scores and standard deviation for 2011 is for 4 subjects?

The Mean score and Standard Deviation are only known to the MOE. Hence, you can only estimate them. Average Mean Scores is probably around 80. While SD is around 10.

- ProteX
- GreenBelt
**Posts:**115**Joined:**Wed Aug 17, 2011 6:28 pm**Total Likes:**0

### Re: how to calculate t score

Mean scores will differ for different subjects, so will the SD. For the more difficult paper, mean score can be lower. Depending on the cohort "quality", the SD can be hovering around the mean or be very spread out for a highly diverse standard cohort.

- Pen88n
- KiasuGrandMaster
**Posts:**4286**Joined:**Tue Sep 16, 2008 11:26 am**Total Likes:**61

### Re: how to calculate t score

Hi!

My son has been exempted from Mother Tongue (MT), hence the exam score will not be included, afaik.

In this regard, how to calculate T-Score if kid is exempted from MT?

Many thanks for reply.

Regards,

ChandraShin

My son has been exempted from Mother Tongue (MT), hence the exam score will not be included, afaik.

In this regard, how to calculate T-Score if kid is exempted from MT?

Many thanks for reply.

Regards,

ChandraShin

- ChandraShin
- KiasuNewbie
**Posts:**2**Joined:**Tue Jun 21, 2011 12:12 am**Total Likes:**0

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