I don't see why the size of the skater should affect what is objectively considered a big jump--in sports like long jump, they don't score you differently based on how tall you are. In fact, I think that that actually speaks to a flaw in letting judges determine this subjectively--a jump may *look* higher because of the size of the skater, but not actually be higher.
I also think that, while yes, the correlation between GOE and size of jump should not be exceptionally high because they are not the only components of a jump's quality, the fact that there is virtually no correlation at all is concerning. Again, you are much better off guessing GOE based off PCS and BV than you are based on ice scope jump statistics--like, absurdly so. The relationship between PCS and GOE, and the relationship between BV and GOE, is quite strong, whereas the relationship between jump size and GOE barely exists. Right now, jump size explains somewhere in the neighborhood of 1% of the variation in GOE, 0% if we are considering height. That seems incredibly low.
In fact, let me re-iterate that if you remove Yuzuru Hanyu from the data set because he's a large outlier, there is actually a negative relationship between jump height and GOE. Essentially, if your name is not Yuzuru Hanyu, jumping higher is correlated with lower scores.
Yes, of course this analysis depends on the accuracy of the ice scope data. Having seen multiple measurements of the same skater jumping the same jump on different, the numbers seem fairly consistent and do not vary wildly, which seems to me to provide at least some evidence of its reliability. Additionally, the numbers seem quite plausible--we see, for instance, that Shoma doesn't jump very high, but he gets good distance and has very high speed exiting the jump, which matches the data given. Or Kolyada jumping high but not far, Yuzuru's 3A being gigantic, and so on. I'm certainly more inclined to trust it than fan made estimates using body-lengths or board-comparisons, which depend a lot on the perspective the shots are taken and are prone to being colored by fan bias.
I also think that, while yes, the correlation between GOE and size of jump should not be exceptionally high because they are not the only components of a jump's quality, the fact that there is virtually no correlation at all is concerning. Again, you are much better off guessing GOE based off PCS and BV than you are based on ice scope jump statistics--like, absurdly so. The relationship between PCS and GOE, and the relationship between BV and GOE, is quite strong, whereas the relationship between jump size and GOE barely exists. Right now, jump size explains somewhere in the neighborhood of 1% of the variation in GOE, 0% if we are considering height. That seems incredibly low.
In fact, let me re-iterate that if you remove Yuzuru Hanyu from the data set because he's a large outlier, there is actually a negative relationship between jump height and GOE. Essentially, if your name is not Yuzuru Hanyu, jumping higher is correlated with lower scores.
Yes, of course this analysis depends on the accuracy of the ice scope data. Having seen multiple measurements of the same skater jumping the same jump on different, the numbers seem fairly consistent and do not vary wildly, which seems to me to provide at least some evidence of its reliability. Additionally, the numbers seem quite plausible--we see, for instance, that Shoma doesn't jump very high, but he gets good distance and has very high speed exiting the jump, which matches the data given. Or Kolyada jumping high but not far, Yuzuru's 3A being gigantic, and so on. I'm certainly more inclined to trust it than fan made estimates using body-lengths or board-comparisons, which depend a lot on the perspective the shots are taken and are prone to being colored by fan bias.