tailieunhanh - Production Process Characterization_4

Tham khảo tài liệu 'production process characterization_4', kỹ thuật - công nghệ, điện - điện tử phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | . Two-way Crossed Value-Splitting Example The first step is to sweep out the cell means to obtain the residuals and means Machine 1 2 3 4 5 A .1262 .1206 .1246 .1272 .123 B .1268 .121 .1236 .1268 .1206 Coolant A .0008 .0014 .0004 .0008 .006 .0004 .004 .0034 .0018 .0014 .0018 Coolant B .0044 .0012 .004 .0022 .0024 .0002 .0004 .004 .0024 .0032 .0034 .0022 .0014 Sweep the row means The next step is to sweep out the row means. This gives the table below. Machine 1 2 3 4 5 A .1243 .0019 .0003 .0029 B .1238 .003 .003 Sweep the Finally we sweep the column means to obtain the grand mean row column coolant effects column machine effects and the interaction effects. means Machine 1 2 3 4 5 .1241 .0025 .00005 .003 A .0003 .00025 .0000 .001 B .0006 .0005 .0000 http div898 handbook ppc section2 2 of 3 5 1 2006 10 17 25 AM . Two-way Crossed Value-Splitting Example What do By looking at the table of residuals we see that the residuals for coolant these tables B tend to be a little higher than for coolant A. This implies that there tell us may be more variability in diameter when we use coolant B. From the effects table above we see that machines 2 and 5 produce smaller pin diameters than the other machines. There is also a very slight coolant effect but the machine effect is larger. Finally there also appears to be slight interaction effects. For instance machines 1 and 2 had smaller diameters with coolant A but the opposite was true for machines 3 4 and 5. Calculate sums of squares and mean We can calculate the values for the ANOVA table according to the formulae in the table on the crossed two-way page. This gives the table below. From the F-values we see that the machine .