Hi everyone, I've got a question regarding these scores:
View attachment 3452
As you can see, I did appallingly in QR

, which is unfortunately not very surprising. For this mock, I got an overall of 95th percentile, but how on earth does this work if I got 26th for QR?! Shouldn't the overall percentile be the average of the percentiles for each mock? And how come a 35/44 is equivalent to 900 for VR, but a 32/39 for DM is also 100th percentile but yields only 890? I also thought you needed to get at least 40+/44 for VR to get a 900, since the scaled score is not supposed to be a percentile, and stays the same no matter what.
This platform uses the
total raw score for the 4 cognitive sections to calculate your percentile, so your very good scores in VR and DM (and also AR as well) put you well ahead (probably very high 90s) and offset the poorer QR score. When you think about it, the higher QR scores probably range from 22-25+ (depending on which exam - e.g. I got 98%ile for 22/36 in exam no. 4), so you have only dropped about 6 or so marks from the majority of other test-takers in that section. You have more than made up for that difference in VR and DM - again, compared to others in this test.
I would be interested to know which exam this was... I am surprised a 35/44 scored a 100%ile in VR: usually, the threshold for 100%ile is a bit higher.
In regards to the scaled scores, I noticed a few months ago that this platform
bases the scaled score entirely on the percentile given for each subtest. It uses the normal distribution scale and
2019 UCAT statistics (mean and standard deviation) to calculate what score you would have received if you beat 100% or 80% of the population. That's why for VR, the highest score was 900 last year, so that is the score you receive. But if you score in the 99%ile, you will receive 750. Same for DM (890 was the highest) and the others being 900 also. I tend to use the total scaled scores as a VERY general indicator of my performance, mostly using the percentiles for each subtest and overall.
This system is probably not as accurate in calculating scaled scores as you would hope for, especially considering the massive difference between scoring in the 99%ile and 100%ile for all of the subtests - even for QR is a difference of 50, DM = 80, etc.
To sum up, I would take these scaled scores with a pinch of salt. Overall, they tend to even themselves out to provide a general indicator of your performance against other test-takers on that platform - but don't stress over them too much. And don't expect to get an overall score in the 99%ile (based on 2019 stats) every time - or any score people are aiming for - due to the way they are calculated. Aim to maintain and/or improve your overall percentile (as your section percentiles can vary markedly with a difference of a few marks up or down) as it is the most reliable indicator of your performance.