Analysis completed and emailed to you in PDF format. There are statistically significant differences for all variables (velocity, penetration, before weight, after weight), but no differences in % weight loss. Chap

PS. When your son is finished with the other 4 shots, just email me the data, I saved all my programs to convert it from Excel into SAS. SAS=Statistical Analysis System (or use to mean that 30 years ago). I don't expect the results to be any different with the other 4 shots, so if he is under a time gun you can just go with these results.