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Many factors COVID-19, test disruption, later test-cycle etc. Of course thats just speculation but I can't really see 90th going up from 2920 (I thought that this year with be 2800s so maybe i'm just mistaken haha).Why might this year be an exception?
You really think I hadn't thought about that?![]()
Bro this is gold![]()
The way you phrased that reminded me of this classic meme format
Yep! That'll be opened when the official percentile calculator is released (sometime in early September if I recall correctly).Is there a dedicated what are my chances thread? Or is that just the past year collated offer data
Is there a reason why the 9th decile scores (VR:670, DM:750, QR: 800, AR: 770) Add up to 2990 not, 2920? Some of the others don't add up as well
I think Sandwich74 is asking WHY doesn't adding up the individual deciles equal the overall decile, especially when it makes sense intuitively. Refer to this post, which hopefully makes sense:The deciles are for individual subsection as well as for the total score. Adding up won’t help. The total score decile is not meant to be the sum of invidual sub section decile.
The total score of 2920 means that it is the 90th percentile score/90th decile score with all the total scores
The score of 670 in VR means that it is 90th percentile or 9th decile with all the scores of VR for this year.
So deciles of each subsection is comparing the scores of all students in that subsection and coming up with percentile/decile of that subsection.
I've given it a bit of thought, and I think I can explain why the sum of individual S.D.s will always be equal or greater than the overall S.D.:
The only situation where the sum of individiual S.D.s would equal the overall S.D. would be if one student achieved 99th percentile for every section (= 99 overall), one student achieved 98th percentile for every section (= 98 overall) etc. etc.
In reality, the diverse nature of the UCAT subtests means that you're unlikely to be this consistent and top the charts in every single section. What actually happens, and what you'll find here on MSO, is that you might be good in some sections and slightly worse in others. So in reality, that 99th percentile VR, DM, QR and AR score doesn't all go to the same person - the 99th percentile VR score might belong to the someone who got 80th percentile in DM, for example.
When this "mixing" of scores occurs, everyone's scores get closer together i.e. instead of student A with 900 in every section and student B with 600 in every section, student A might have 600, 900, 600, 900 and student B 900, 600, 900, 600. This represents a "narrowing" of the normal distribution curve:
View attachment 3937
As a result, the overall standard deviation has reduced, going below the sum of the individual standard deviations. This is the reason why if you get, let's say, 1.282 standard deviations above the mean (equivalent to 90th percentile) for the individual subtests VR, DM, QR and AR, your actual OVERALL standard deviation above the mean (and hence, overall percentile) is a fair bit higher than that.
Me too... the interview invite forum from last year is giving me hope but that might be false hope too! Such a roller coaster of emotions, yes-no!-maybe???Here's hoping WSU's VR weighting pulls me through because I defs underperformed this year <3
Don't lose hope yet! If you're GWS you won't really know what the stats for that pool is like until the invites roll out. Also you'll definitely perform better the 2nd time if you don't make it this time, I just happened to slip up on the day. Good luck!Me too... the interview invite forum from last year is giving me hope but that might be false hope too! Such a roller coaster of emotions, yes-no!-maybe???
This is my first attempt and can only say I really take my hat off to the people that have put themselves through this multiple times. Respect.