A Latin-square experiment was performed to compare the solder-bond strength of a tin-can body (in pounds force required to break the bond). Five different methods of soldering, involving different fluxes, solders, and solder temperatures were used on five different can sizes and five pull-test-machine operators were used, with the following results:

Perform an analysis of variance of these data.

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Can sizes 33.0 32.429.9 27.2 31.7 32.1 33.7 30.3 22.533.1 32.5 32.631.024.9 32.2 32.0 32.5 32.2 25.532.1 31.833.628.7 24.032.0 Opts 3