I understand and concede to this being a very good and useful regimen for some but before I get pinned down with something like this, I will simply get out of chickens.
The 'Family' is doing something similar and that's ok-doakey with me but Ol' dad will not be bothered with it. The Dairy Goat Herd is going on test (again) in the Spring and I see real and useful potential for our breeding program in doing so and again, I see the enormous value in the chicken growth/weight charting but not enough for me to shackle myself to it. I'll continue to heft and feel the live birds for all the information I WANT!!! lololol
You do not have to graph it to see it.
If you do not see it, you do not get it. Obviously, you do not get it.
What you have there is a member of your thread that is trying to illustrate the rate and gains during a period of growth. You should encourage it because when it is more complete, it is rather informative. Instead of discouraging it, you should encourage it. It really is part of "breeding for production". See, when you breed, you breed for improvement. You do not depend on any touchy feely notions. Production is defined by numbers. Here you discouraged a member for sharing actual evidence. Something that is in short supply here.
This thread is titled breeding for production. It is not a thread on breeding, which is fine. It is just misleading. It implies that those that are interested in that should contribute, but if they do, they get a response like above.
Just remember, you titled the thread what you did. Breeding for production is actually breeding for improvement. Concerning utility, improvement is measured not by touch feely impressions, but by numbers.