* Eunoia JC (EJC)

[phtthp]

thsheng99:

Got some updated info on Bishan campus
https://eunoiajc.moe.edu.sg/about/bishan/

After shift into Sin Ming campus year end December 2019 this year , there should be an Open House next Year at grand new premises, 2020 January

[floppy]

Grandyma\" post_id=\"1900956\" time=\"1551662670\" user_id=\"153793:

Grandyma\" post_id=\"1900939\" time=\"1551658426\" user_id=\"153793:

https://postimg.cc/F1jBMcdz

Above diagrams show its not true Median can be 1-3 point Higher than Mean.
Can be higher or lower than Median as shown here.
Correct me if I interpret these diagram wrongly. It means if the majority get high score, then the Mean will be closed to Median score or even higher. But it wont be like 3 point lower than Median as what someone said.
Right?

So can you answer my interpretation of the abovr diagram. Am I right?
My ques: Mean can be higher or lower than Median? And not what someone said can be 1-3 pt lower than Median.
Not finding out Ny 2015 Mean is curved positive/negative.

For all the top JCs, i.e. mean > 80, their mean is likely to be much lower than median.
Reason being that the max is capped at 90 RP (regardless of 6, 7, 8 or 9 distinctions). There's a short tail towards the top end, and the possibility of a very long tail towards the lower end, similar to the picture of negative skew.

[lee_yl]

Grandyma\" post_id=\"1900939\" time=\"1551658426\" user_id=\"153793:

https://postimg.cc/F1jBMcdz

Above diagrams show its not true Median can be 1-3 point Higher than Mean.
Can be higher or lower than Median as shown here.
Correct me if I interpret these diagram wrongly. It means if the majority get high score, then the Mean will be closed to Median score or even higher. But it wont be like 3 point lower than Median as what someone said.
Right?

Statistics 101.

Let’s take a look at this population:
10, 20, 30, 40 and 50

Mean = Median = 30

Change the population a bit:

5, 10, 30, 40, 50

We have Mean = 27 < Median

Change the population slightly again:

5, 20, 30, 50, 50

We have Mean = 31 > Median

Take RI for example.
Class of 2017, with 63% 3H2 Dist, the mean was 85.
Class of 2016, with 61% of 3H2 Dist, median was 87.8.
If we assume that the RI population shares the same statistical properties every year, with a mean that hovers around 85, then median is indeed between 1-3 points higher than the mean. And the second assumption is that most of the other JCs’ population share the same characteristics, some very good students, mostly clustered near the 3 H2 distinctions and a small cluster that doesn’t perform as well.

Of course, if all the schools are forthcoming with their performance metrics, we won’t need to extrapolate and assume that much

[obm]

It is likely to be left skewed distribution or negative skew for NJC, based on that pathetic bit of info provided by the school. There were 35% H2As and the Math & Science depts did pretty well according to one table compiled by a member in the Alevel 2018 megathread.


NJC's '1 in 2 scored As for H3' cannot be counted as it's not part of UAS. I hazard a guess its Mode is on the right side. But as to how flat the curve is, we need its full set of data to determine how big the margin is between its Mean and Median. For negative skews, the Median is higher than Mean, hence the preference by its Principal to present the Median.
https://postimg.cc/dkvrbBmH

[Grandyma]

obm\" post_id=\"1900989\" time=\"1551669708\" user_id=\"162988:

It is likely to be left skewed distribution or negative skew for NJC, based on that pathetic bit of info provided by the school. There were 35% H2As and the Math & Science depts did pretty well according to one table compiled by a member in the Alevel 2018 megathread.

NJC's '1 in 2 scored As for H3' cannot be counted as it's not part of UAS. I hazard a guess its Mode is on the right side. But as to how flat the curve is, we need its full set of data to determine how big the margin is between its Mean and Median. For negative skews, the Median is higher than Mean, hence the preference by its Principal to present the Median.
https://postimg.cc/dkvrbBmH

Thank you all for answering my question.
So its right to say Mean can be higher or lower than Median.
Regard to NJC Mean, yes fair enough to say its Mean likely negative skewed as Principal didnt share much abt its cohort scores.
How about NYJC?
Principal shared \"More than 5 out of 10 in you got more than 85 pt\".
So can say its Median is slightly > 85.X?
Skewed towards?

[phtthp]

Grandyma:

How about NYJC?

Principal shared \"More than 5 out of 10 in you scored More than 85 points\".

Be careful, with above vague, ambiguous statement, because Principal of Nanyang Junior College did not state explicitly nor clearly, what exactly is this \"more than 5 out of 10 in you ? This \" in you\" being refered to, actually constitute what ? P of NYJC didn't define explicitly, is it

A) more than 5 out of 10, who had taken all H2 subjects, or

B) more than 5 out of 10, who had taken all H1 subjects, or

C) more than 5 out of 10, who had taken either H1 or H2 subjects ?

As you know, playing of words around, do have an impact, on the hearers.

For example

The meaning of

\"5 out of 10 in you, who had ALL taken H2 subjects\"

Is very different, from say,

\"5 out of 10 in you : out of which 4 had taken H1 subjects, while one taking H2 subject\"

See the impact (difference), after you read ?

[Grandyma]

phtthp\" post_id=\"1901035\" time=\"1551680107\" user_id=\"35251:

How about NYJC?

Principal shared \"More than 5 out of 10 in you scored More than 85 points\".

Be careful, with above vague, ambiguous statement, because Principal of Nanyang Junior College did not state explicitly nor clearly, what exactly is this \"more than 5 out of 10 in you. This \" in you\" refering to, P of NYJC didn't define explicitly, is it

A) more than 5 out of 10, who had taken all H2 subjects, or

B) more than 5 out of 10, who had taken all H1 subjects, or

C) more than 5 out of 10, who had taken either H1 or H2 subjects ?[/quote]Ah..if he was addressing the cohort, it refers to the whole cohort mah.
Just like other JCs put up slides in front of cohort eg 7 in 10 got A in H2 Chem- this 10 refers to all taking this H2 Chem.
To get 85 pts above, that is to add up all RP ( 3 H2 + H1+GP+PW). Otherwise how to get 85pt if just add only H2 or H1 subjects?

[floppy]

Grandyma\" post_id=\"1901033\" time=\"1551679512\" user_id=\"153793:

Thank you all for answering my question.
So its right to say Mean can be higher or lower than Median.
Regard to NJC Mean, yes fair enough to say its Mean likely negative skewed as Principal didnt share much abt its cohort scores.
How about NYJC?
Principal shared \"More than 5 out of 10 in you got more than 85 pt\".
So can say its Median is slightly > 85.X?
Skewed towards?

If you take principal's comment at face value, median > 85 (however, we also know 5 in 10 could also mean 45% ).

If 50% of the students score between 85 and 90, an equal amount would have to score between 80 and 85 to have mean = median, or a better ratio for mean > median, which are very unlikely to be the case. Chances are, there will be a handful scoring in the 70s or lower. Hence, NYJC mean should also be in the low 80s. How low? Insufficient data to know.

[snowyqueen]

Err…rvhs had mean UAS 83.75rp with 57% scoring 85-90rp. Gp, one of the hardest subject to score, was closed to 40%dist for rv. Rv also had mean bcme/pcme h2 subject distinction rate of >50% or if not in 60% range. Even that, their mean UAS is not >85. For hci n ri, mean UAS is just ~ 85. If a non ipjc is able to produce mean UAS of >85 to become the no.1 jc in Singapore, then the implication is very big. I SERIOUSLY think moe needs to adjust on the direction in grooming students in ipjc to be very fair to jae students to reduce the inequality of resources allocation and special programs opportunities.

[ezke]

thsheng99\" post_id=\"1900543\" time=\"1551425407\" user_id=\"37400:

Grandyma\" post_id=\"1900412\" time=\"1551397436\" user_id=\"153793:

EJC value adding...you mean with 75% IP kids in this 2018 A level cohort ( its P6 intake that yr i think was COP 252-257 and higher) , you didnt expect this cohort to churn out Mean RP of 82.4 results regardless its pioneer batch or not. From info shared, RP 82.4 is not better than some other JCs.

Which single digit JCs are you refering that they didnt produce the so called ' value adding' results and that EJC has more 'value added' results??

Are you saying the rest of the IP JCs have no IP kids? Furthermore, there is still a substantial 25% that came in through JAE in EJC. Please look at the COP at 2017

Junior College\tArts\tScience / IB
Raffles Institution, RI\t4\t4
Hwa Chong Institution, HCI\t4\t4
Victoria Junior College, VJC\t7\t5
Anglo-Chinese School (Independent), ACSi\t–\t5
National Junior College, NJC\t7\t6
Nanyang Junior College, NYJC\t7\t6
Anglo-Chinese Junior College, ACJC\t8\t7
St. Joseph’s Institution, SJI\t–\t7
Eunoia Junior College, EJC\t9\t9

There are at least 8 schools with better COP than EJC. With a UAS of 82.4 is close to or similar to the likes of NJC and VJC ( who has COP of 5-7)

Furthermore, given that it is a pioneer year ( with no proven record) with presumably many teething problems and that it is operating from a temporary campus in remote Mt Sinai where transportation links are not that good, would you not think that they have been \"value-adding\"?

You are just being over-critical. I am glad that my grandma is more reasonable

Given that there are 25 %JAE, and if the 75% of the IP kids really performed above-expectation (say >=85 UAS), I can conclude that the JAE kids would have performed below expectation for the mean UAS to be 82.4.