I have just finished creating an online stats calculator that allows you to measure one or two groups of shot data, calculate the average and SD of the underlying population with confidence levels, and compare two groups to see if they are probably different or just a result of random chance.
You can use this with velocities or point of impact measurements. Read the previous blog article first to understand how the population matters, and next week I will cover many example scenarios to show how these calculations can save you from wasting time and ammo in the future.
I have been very busy lately, with development of the new AutoThrow trickler add-on nearing completion and also creating a video for the Two-Box Chrono. I promise... I'll write the new article next week. In the meantime, run some of your old data through the calculator, and have fun with it!