Drag each card into the correct category, then check your work.
8 shots tightly clustered, all far from the bullseye
8 shots spread all over, centered on the bullseye
8 shots tightly clustered right on the bullseye
8 shots scattered widely, centered nowhere near bullseye
1 balance: trials 9.9, 10.0, 10.1 g — true value 10.0 g
2 balances: tech A 9.9, 10.0 g; tech B 11.0, 9.0 g
Clustered results, but all +0.15 g too high
Same block measured twice — fits a clamp / meter stick issue