2012 PSLE Discussions and Strategy

[ruohoo97]

Chenonceau:

ruohoo... do these help?


http://www.greatminds.edu.sg/index.php?option=com_content&view=article&id=89:disclose-t-score-secret&catid=59:great-minds-club&Itemid=91


http://road-to-psle.blogspot.sg/2007/11/how-psle-aggregate-and-t-scores-are.html

The t-score formula has both cohort average (difficulty of paper) and cohort standard deviation (spread of marks around average). Both have a bearing on how much 1 mark raw score increase in a particular subject contributes to t-score. Most people look at paper difficulty... but given the formula, spread is important too.

http://i48.tinypic.com/245wldx.png\">

Read the above table with some pinches of salt... it is NOT confirmed that Chinese has the smallest spread of marks around the mean. If any parent can confirm/disconfirm this, it would be good. What the table above shows is ONLY that difficulty of paper (cohort average) and spread of marks (gap between best and worst student) has a bearing on t-score.

The relative spreads of Chinese, English, Science and Math are drawn from here - http://www.greatminds.edu.sg/index.php?option=com_content&view=article&id=89:disclose-t-score-secret&catid=59:great-minds-club&Itemid=91... this site reverse engineered the spreads from pass rate and quality pass rate for each subject.

Thank a lot Chen, yes, greatly appreciated. It is indeed very hard to estimate Tscore based on test paper alone. For higher ability pupils, they may wish to have difficult paper to be a star scorer.

As for SD for Chinese and Maths, I am still bit confusing......

[Mathematica]

The paper was tricky, though not challenging. Some pupils said easy at first, only to realise their marks were lost after comparing ans with their classmates.

[GLORYmum]

Mathematica:

The paper was tricky, though not challenging. Some pupils said easy at first, only to realise their marks were lost after comparing ans with their classmates.

like your avatar very original.
some of dd's friend says quite easy but got 6 marks deducted.
maybe thought was easy at first so let guards down.

[mummy so kiasu]

Chenonceau:

ruohoo... do these help?


http://www.greatminds.edu.sg/index.php?option=com_content&view=article&id=89:disclose-t-score-secret&catid=59:great-minds-club&Itemid=91


http://road-to-psle.blogspot.sg/2007/11/how-psle-aggregate-and-t-scores-are.html

The t-score formula has both cohort average (difficulty of paper) and cohort standard deviation (spread of marks around average). Both have a bearing on how much 1 mark raw score increase in a particular subject contributes to t-score. Most people look at paper difficulty... but given the formula, spread is important too.

http://i48.tinypic.com/245wldx.png\">

Read the above table with some pinches of salt... it is NOT confirmed that Chinese has the smallest spread of marks around the mean. If any parent can confirm/disconfirm this, it would be good. What the table above shows is ONLY that difficulty of paper (cohort average) and spread of marks (gap between best and worst student) has a bearing on t-score.

The relative spreads of Chinese, English, Science and Math are drawn from here - http://www.greatminds.edu.sg/index.php?option=com_content&view=article&id=89:disclose-t-score-secret&catid=59:great-minds-club&Itemid=91... this site reverse engineered the spreads from pass rate and quality pass rate for each subject.

Smaller spread of mark from the mean will lead to higher or lower T score?

[alng]

mummy so kiasu:

Chenonceau:

ruohoo... do these help?


http://www.greatminds.edu.sg/index.php?option=com_content&view=article&id=89:disclose-t-score-secret&catid=59:great-minds-club&Itemid=91


http://road-to-psle.blogspot.sg/2007/11/how-psle-aggregate-and-t-scores-are.html

The t-score formula has both cohort average (difficulty of paper) and cohort standard deviation (spread of marks around average). Both have a bearing on how much 1 mark raw score increase in a particular subject contributes to t-score. Most people look at paper difficulty... but given the formula, spread is important too.

http://i48.tinypic.com/245wldx.png\">

Read the above table with some pinches of salt... it is NOT confirmed that Chinese has the smallest spread of marks around the mean. If any parent can confirm/disconfirm this, it would be good. What the table above shows is ONLY that difficulty of paper (cohort average) and spread of marks (gap between best and worst student) has a bearing on t-score.

The relative spreads of Chinese, English, Science and Math are drawn from here - http://www.greatminds.edu.sg/index.php?option=com_content&view=article&id=89:disclose-t-score-secret&catid=59:great-minds-club&Itemid=91... this site reverse engineered the spreads from pass rate and quality pass rate for each subject.

Smaller spread of mark from the mean will lead to higher or lower T score?

Higher mean and higher SD will lead to lower T-score.

[Chenonceau]

mummy so kiasu:

Smaller spread of mark from the mean will lead to higher or lower T score?

Hello dearie... smaller spread higher contribution to t-score per 1 mark. Wider spread, smaller per 1 mark. Sorry I can't explain very well... not good at Math.

[concerned_of_PSLE 10]

concerned_of_PSLE 10:

fifiyeo:

There is one question on the height of water in the end. What's the answer DS asking??

I got a weird mixed number.
13 something over something

Can someone help with this question

[concerned_of_PSLE 10]

How about the compre MCQ second last question why did the author feel heroic for a brief moment

[smartmummy]

Hi!

anyone know how they calculate T-score for MT? for every MT has different SD or …?

[Studious Alien]

concerned_of_PSLE 10:

How about the compre MCQ second last question why did the author feel heroic for a brief moment

If I'm not wrong the answer is option 2 ( He saved himself and his friends ).