why do you think some equations did a better job predicting height than others?

The reason some equations did a better job of predicting height than others could have to do with how the data was picked. A good strategy could have been to pick data points that span the entire range of heights and tibia sizes found in the classroom (rather than picking points that are all very close together on the graph). So if a group did that, they may have gotten better results than a group that simply picked at random.

special interest groups must step back and let the process work itself out a representative can amend it at several points in the congressional staffers must do homework and report to the floor on what they 've learned

sorry i cant