The data for this case study were collected by Said Jahanmir of the NIST Ceramics Division in 1996 in connection with a NIST/industry ceramics consortium for strength optimization of ceramic strength.

The response variable is a measure of the strength of the ceramic material (bonded Si nitrate). The complete data set contains the following variables: 

Factor 1 = Observation ID, i.e., run number (1 to 960) 
Factor 2 = Lab (1 to 8) 
Factor 3 = Bar ID within lab (1 to 30) 
Factor 4 = Test number (1 to 4) 
Response Variable = Strength of Ceramic 
Factor 5 = Table speed (2 levels: 0.025 and 0.125) 
Factor 6 = Down feed rate (2 levels: 0.050 and 0.125) 
Factor 7 = Wheel grit size (2 levels: 150 and 80) 
Factor 8 = Direction (2 levels: longitudinal and transverse) 
Factor 9 = Treatment (1 to 16) 
Factor 10 = Set of 15 within lab (2 levels: 1 and 2) 
Factor 11 = Replication (2 levels: 1 and 2) 
Factor 12 = Bar Batch (1 and 2) 

The four primary factors of interest are: 
Table speed (X1) 
Down feed rate (X2) 
Wheel grit size (X3) 
Direction (X4) 
but we're considering only the first three in the data shown here.
In addtion, we are interested in the nuisance factors 
*Lab 
*Batch 

http://www.itl.nist.gov/div898/handbook/eda/section4/eda42a1.htm

Run  Lab  Batch   Y      X1   X2   X3
   1    1    1   608.781  -1   -1   -1
   2    1    2   569.670  -1   -1   -1
   3    1    1   689.556  -1   -1   -1
   4    1    2   747.541  -1   -1   -1
   5    1    1   618.134  -1   -1   -1
   6    1    2   612.182  -1   -1   -1
   7    1    1   680.203  -1   -1   -1
   8    1    2   607.766  -1   -1   -1
   9    1    1   726.232  -1   -1   -1
  10    1    2   605.380  -1   -1   -1
  11    1    1   518.655  -1   -1   -1
  12    1    2   589.226  -1   -1   -1
  13    1    1   740.447  -1   -1   -1
  14    1    2   588.375  -1   -1   -1
  15    1    1   666.830  -1   -1   -1
  16    1    2   531.384  -1   -1   -1
  17    1    1   710.272  -1   -1   -1
  18    1    2   633.417  -1   -1   -1
  19    1    1   751.669  -1   -1   -1
  20    1    2   619.060  -1   -1   -1
  21    1    1   697.979  -1   -1   -1
  22    1    2   632.447  -1   -1   -1
  23    1    1   708.583  -1   -1   -1
  24    1    2   624.256  -1   -1   -1
  25    1    1   624.972  -1   -1   -1
  26    1    2   575.143  -1   -1   -1
  27    1    1   695.070  -1   -1   -1
  28    1    2   549.278  -1   -1   -1
  29    1    1   769.391  -1   -1   -1
  30    1    2   624.972  -1   -1   -1
  61    1    1   720.186  -1    1    1
  62    1    2   587.695  -1    1    1
  63    1    1   723.657  -1    1    1
  64    1    2   569.207  -1    1    1
  65    1    1   703.700  -1    1    1
  66    1    2   613.257  -1    1    1
  67    1    1   697.626  -1    1    1
  68    1    2   565.737  -1    1    1
  69    1    1   714.980  -1    1    1
  70    1    2   662.131  -1    1    1
  71    1    1   657.712  -1    1    1
  72    1    2   543.177  -1    1    1
  73    1    1   609.989  -1    1    1
  74    1    2   512.394  -1    1    1
  75    1    1   650.771  -1    1    1
  76    1    2   611.190  -1    1    1
  77    1    1   707.977  -1    1    1
  78    1    2   659.982  -1    1    1
  79    1    1   712.199  -1    1    1
  80    1    2   569.245  -1    1    1
  81    1    1   709.631  -1    1    1
  82    1    2   725.792  -1    1    1
  83    1    1   703.160  -1    1    1
  84    1    2   608.960  -1    1    1
  85    1    1   744.822  -1    1    1
  86    1    2   586.060  -1    1    1
  87    1    1   719.217  -1    1    1
  88    1    2   617.441  -1    1    1
  89    1    1   619.137  -1    1    1
  90    1    2   592.845  -1    1    1
 151    2    1   753.333   1    1    1
 152    2    2   631.754   1    1    1
 153    2    1   677.933   1    1    1
 154    2    2   588.113   1    1    1
 155    2    1   735.919   1    1    1
 156    2    2   555.724   1    1    1
 157    2    1   695.274   1    1    1
 158    2    2   702.411   1    1    1
 159    2    1   504.167   1    1    1
 160    2    2   631.754   1    1    1
 161    2    1   693.333   1    1    1
 162    2    2   698.254   1    1    1
 163    2    1   625.000   1    1    1
 164    2    2   616.791   1    1    1
 165    2    1   596.667   1    1    1
 166    2    2   551.953   1    1    1
 167    2    1   640.898   1    1    1
 168    2    2   636.738   1    1    1
 169    2    1   720.506   1    1    1
 170    2    2   571.551   1    1    1
 171    2    1   700.748   1    1    1
 172    2    2   521.667   1    1    1
 173    2    1   691.604   1    1    1
 174    2    2   587.451   1    1    1
 175    2    1   636.738   1    1    1
 176    2    2   700.422   1    1    1
 177    2    1   731.667   1    1    1
 178    2    2   595.819   1    1    1
 179    2    1   635.079   1    1    1
 180    2    2   534.236   1    1    1
 181    2    1   716.926   1   -1   -1
 182    2    2   606.188   1   -1   -1
 183    2    1   759.581   1   -1   -1
 184    2    2   575.303   1   -1   -1
 185    2    1   673.903   1   -1   -1
 186    2    2   590.628   1   -1   -1
 187    2    1   736.648   1   -1   -1
 188    2    2   729.314   1   -1   -1
 189    2    1   675.957   1   -1   -1
 190    2    2   619.313   1   -1   -1
 191    2    1   729.230   1   -1   -1
 192    2    2   624.234   1   -1   -1
 193    2    1   697.239   1   -1   -1
 194    2    2   651.304   1   -1   -1
 195    2    1   728.499   1   -1   -1
 196    2    2   724.175   1   -1   -1
 197    2    1   797.662   1   -1   -1
 198    2    2   583.034   1   -1   -1
 199    2    1   668.530   1   -1   -1
 200    2    2   620.227   1   -1   -1
 201    2    1   815.754   1   -1   -1
 202    2    2   584.861   1   -1   -1
 203    2    1   777.392   1   -1   -1
 204    2    2   565.391   1   -1   -1
 205    2    1   712.140   1   -1   -1
 206    2    2   622.506   1   -1   -1
 207    2    1   663.622   1   -1   -1
 208    2    2   628.336   1   -1   -1
 209    2    1   684.181   1   -1   -1
 210    2    2   587.145   1   -1   -1
 271    3    1   629.012   1   -1    1
 272    3    2   584.319   1   -1    1
 273    3    1   640.193   1   -1    1
 274    3    2   538.239   1   -1    1
 275    3    1   644.156   1   -1    1
 276    3    2   538.097   1   -1    1
 277    3    1   642.469   1   -1    1
 278    3    2   595.686   1   -1    1
 279    3    1   639.090   1   -1    1
 280    3    2   648.935   1   -1    1
 281    3    1   439.418   1   -1    1
 282    3    2   583.827   1   -1    1
 283    3    1   614.664   1   -1    1
 284    3    2   534.905   1   -1    1
 285    3    1   537.161   1   -1    1
 286    3    2   569.858   1   -1    1
 287    3    1   656.773   1   -1    1
 288    3    2   617.246   1   -1    1
 289    3    1   659.534   1   -1    1
 290    3    2   610.337   1   -1    1
 291    3    1   695.278   1   -1    1
 292    3    2   584.192   1   -1    1
 293    3    1   734.040   1   -1    1
 294    3    2   598.853   1   -1    1
 295    3    1   687.665   1   -1    1
 296    3    2   554.774   1   -1    1
 297    3    1   710.858   1   -1    1
 298    3    2   605.694   1   -1    1
 299    3    1   701.716   1   -1    1
 300    3    2   627.516   1   -1    1
 301    3    1   382.133   1    1   -1
 302    3    2   574.522   1    1   -1
 303    3    1   719.744   1    1   -1
 304    3    2   582.682   1    1   -1
 305    3    1   756.820   1    1   -1
 306    3    2   563.872   1    1   -1
 307    3    1   690.978   1    1   -1
 308    3    2   715.962   1    1   -1
 309    3    1   670.864   1    1   -1
 310    3    2   616.430   1    1   -1
 311    3    1   670.308   1    1   -1
 312    3    2   778.011   1    1   -1
 313    3    1   660.062   1    1   -1
 314    3    2   604.255   1    1   -1
 315    3    1   790.382   1    1   -1
 316    3    2   571.906   1    1   -1
 317    3    1   714.750   1    1   -1
 318    3    2   625.925   1    1   -1
 319    3    1   716.959   1    1   -1
 320    3    2   682.426   1    1   -1
 321    3    1   603.363   1    1   -1
 322    3    2   707.604   1    1   -1
 323    3    1   713.796   1    1   -1
 324    3    2   617.400   1    1   -1
 325    3    1   444.963   1    1   -1
 326    3    2   689.576   1    1   -1
 327    3    1   723.276   1    1   -1
 328    3    2   676.678   1    1   -1
 329    3    1   745.527   1    1   -1
 330    3    2   563.290   1    1   -1
 361    4    1   778.333  -1   -1    1
 362    4    2   581.879  -1   -1    1
 363    4    1   723.349  -1   -1    1
 364    4    2   447.701  -1   -1    1
 365    4    1   708.229  -1   -1    1
 366    4    2   557.772  -1   -1    1
 367    4    1   681.667  -1   -1    1
 368    4    2   593.537  -1   -1    1
 369    4    1   566.085  -1   -1    1
 370    4    2   632.585  -1   -1    1
 371    4    1   687.448  -1   -1    1
 372    4    2   671.350  -1   -1    1
 373    4    1   597.500  -1   -1    1
 374    4    2   569.530  -1   -1    1
 375    4    1   637.410  -1   -1    1
 376    4    2   581.667  -1   -1    1
 377    4    1   755.864  -1   -1    1
 378    4    2   643.449  -1   -1    1
 379    4    1   692.945  -1   -1    1
 380    4    2   581.593  -1   -1    1
 381    4    1   766.532  -1   -1    1
 382    4    2   494.122  -1   -1    1
 383    4    1   725.663  -1   -1    1
 384    4    2   620.948  -1   -1    1
 385    4    1   698.818  -1   -1    1
 386    4    2   615.903  -1   -1    1
 387    4    1   760.000  -1   -1    1
 388    4    2   606.667  -1   -1    1
 389    4    1   775.272  -1   -1    1
 390    4    2   579.167  -1   -1    1
 421    4    1   708.885  -1    1   -1
 422    4    2   662.510  -1    1   -1
 423    4    1   727.201  -1    1   -1
 424    4    2   436.237  -1    1   -1
 425    4    1   642.560  -1    1   -1
 426    4    2   644.223  -1    1   -1
 427    4    1   690.773  -1    1   -1
 428    4    2   586.035  -1    1   -1
 429    4    1   688.333  -1    1   -1
 430    4    2   620.833  -1    1   -1
 431    4    1   743.973  -1    1   -1
 432    4    2   652.535  -1    1   -1
 433    4    1   682.461  -1    1   -1
 434    4    2   593.516  -1    1   -1
 435    4    1   761.430  -1    1   -1
 436    4    2   587.451  -1    1   -1
 437    4    1   691.542  -1    1   -1
 438    4    2   570.964  -1    1   -1
 439    4    1   643.392  -1    1   -1
 440    4    2   645.192  -1    1   -1
 441    4    1   697.075  -1    1   -1
 442    4    2   540.079  -1    1   -1
 443    4    1   708.229  -1    1   -1
 444    4    2   707.117  -1    1   -1
 445    4    1   746.467  -1    1   -1
 446    4    2   621.779  -1    1   -1
 447    4    1   744.819  -1    1   -1
 448    4    2   585.777  -1    1   -1
 449    4    1   655.029  -1    1   -1
 450    4    2   703.980  -1    1   -1
 541    5    1   715.224  -1   -1   -1
 542    5    2   698.237  -1   -1   -1
 543    5    1   614.417  -1   -1   -1
 544    5    2   757.120  -1   -1   -1
 545    5    1   761.363  -1   -1   -1
 546    5    2   621.751  -1   -1   -1
 547    5    1   716.106  -1   -1   -1
 548    5    2   472.125  -1   -1   -1
 549    5    1   659.502  -1   -1   -1
 550    5    2   612.700  -1   -1   -1
 551    5    1   730.781  -1   -1   -1
 552    5    2   583.170  -1   -1   -1
 553    5    1   546.928  -1   -1   -1
 554    5    2   599.771  -1   -1   -1
 555    5    1   734.203  -1   -1   -1
 556    5    2   549.227  -1   -1   -1
 557    5    1   682.051  -1   -1   -1
 558    5    2   605.453  -1   -1   -1
 559    5    1   701.341  -1   -1   -1
 560    5    2   569.599  -1   -1   -1
 561    5    1   759.729  -1   -1   -1
 562    5    2   637.233  -1   -1   -1
 563    5    1   689.942  -1   -1   -1
 564    5    2   621.774  -1   -1   -1
 565    5    1   769.424  -1   -1   -1
 566    5    2   558.041  -1   -1   -1
 567    5    1   715.286  -1   -1   -1
 568    5    2   583.170  -1   -1   -1
 569    5    1   776.197  -1   -1   -1
 570    5    2   345.294  -1   -1   -1
 571    5    1   547.099   1   -1    1
 572    5    2   570.999   1   -1    1
 573    5    1   619.942   1   -1    1
 574    5    2   603.232   1   -1    1
 575    5    1   696.046   1   -1    1
 576    5    2   595.335   1   -1    1
 577    5    1   573.109   1   -1    1
 578    5    2   581.047   1   -1    1
 579    5    1   638.794   1   -1    1
 580    5    2   455.878   1   -1    1
 581    5    1   708.193   1   -1    1
 582    5    2   627.880   1   -1    1
 583    5    1   502.825   1   -1    1
 584    5    2   464.085   1   -1    1
 585    5    1   632.633   1   -1    1
 586    5    2   596.129   1   -1    1
 587    5    1   683.382   1   -1    1
 588    5    2   640.371   1   -1    1
 589    5    1   684.812   1   -1    1
 590    5    2   621.471   1   -1    1
 591    5    1   738.161   1   -1    1
 592    5    2   612.727   1   -1    1
 593    5    1   671.492   1   -1    1
 594    5    2   606.460   1   -1    1
 595    5    1   709.771   1   -1    1
 596    5    2   571.760   1   -1    1
 597    5    1   685.199   1   -1    1
 598    5    2   599.304   1   -1    1
 599    5    1   624.973   1   -1    1
 600    5    2   579.459   1   -1    1
 601    6    1   757.363   1    1    1
 602    6    2   761.511   1    1    1
 603    6    1   633.417   1    1    1
 604    6    2   566.969   1    1    1
 605    6    1   658.754   1    1    1
 606    6    2   654.397   1    1    1
 607    6    1   664.666   1    1    1
 608    6    2   611.719   1    1    1
 609    6    1   663.009   1    1    1
 610    6    2   577.409   1    1    1
 611    6    1   773.226   1    1    1
 612    6    2   576.731   1    1    1
 613    6    1   708.261   1    1    1
 614    6    2   617.441   1    1    1
 615    6    1   739.086   1    1    1
 616    6    2   577.409   1    1    1
 617    6    1   667.786   1    1    1
 618    6    2   548.957   1    1    1
 619    6    1   674.481   1    1    1
 620    6    2   623.315   1    1    1
 621    6    1   695.688   1    1    1
 622    6    2   621.761   1    1    1
 623    6    1   588.288   1    1    1
 624    6    2   553.978   1    1    1
 625    6    1   545.610   1    1    1
 626    6    2   657.157   1    1    1
 627    6    1   752.305   1    1    1
 628    6    2   610.882   1    1    1
 629    6    1   684.523   1    1    1
 630    6    2   552.304   1    1    1
 631    6    1   717.159  -1    1   -1
 632    6    2   545.303  -1    1   -1
 633    6    1   721.343  -1    1   -1
 634    6    2   651.934  -1    1   -1
 635    6    1   750.623  -1    1   -1
 636    6    2   635.240  -1    1   -1
 637    6    1   776.488  -1    1   -1
 638    6    2   641.083  -1    1   -1
 639    6    1   750.623  -1    1   -1
 640    6    2   645.321  -1    1   -1
 641    6    1   600.840  -1    1   -1
 642    6    2   566.127  -1    1   -1
 643    6    1   686.196  -1    1   -1
 644    6    2   647.844  -1    1   -1
 645    6    1   687.870  -1    1   -1
 646    6    2   554.815  -1    1   -1
 647    6    1   725.527  -1    1   -1
 648    6    2   620.087  -1    1   -1
 649    6    1   658.796  -1    1   -1
 650    6    2   711.301  -1    1   -1
 651    6    1   690.380  -1    1   -1
 652    6    2   644.355  -1    1   -1
 653    6    1   737.144  -1    1   -1
 654    6    2   713.812  -1    1   -1
 655    6    1   663.851  -1    1   -1
 656    6    2   696.707  -1    1   -1
 657    6    1   766.630  -1    1   -1
 658    6    2   589.453  -1    1   -1
 659    6    1   625.922  -1    1   -1
 660    6    2   634.468  -1    1   -1
 721    7    1   694.430   1    1   -1
 722    7    2   599.751   1    1   -1
 723    7    1   730.217   1    1   -1
 724    7    2   624.542   1    1   -1
 725    7    1   700.770   1    1   -1
 726    7    2   723.505   1    1   -1
 727    7    1   722.242   1    1   -1
 728    7    2   674.717   1    1   -1
 729    7    1   763.828   1    1   -1
 730    7    2   608.539   1    1   -1
 731    7    1   695.668   1    1   -1
 732    7    2   612.135   1    1   -1
 733    7    1   688.887   1    1   -1
 734    7    2   591.935   1    1   -1
 735    7    1   531.021   1    1   -1
 736    7    2   676.656   1    1   -1
 737    7    1   698.915   1    1   -1
 738    7    2   647.323   1    1   -1
 739    7    1   735.905   1    1   -1
 740    7    2   811.970   1    1   -1
 741    7    1   732.039   1    1   -1
 742    7    2   603.883   1    1   -1
 743    7    1   751.832   1    1   -1
 744    7    2   608.643   1    1   -1
 745    7    1   618.663   1    1   -1
 746    7    2   630.778   1    1   -1
 747    7    1   744.845   1    1   -1
 748    7    2   623.063   1    1   -1
 749    7    1   690.826   1    1   -1
 750    7    2   472.463   1    1   -1
 811    7    1   666.893  -1    1    1
 812    7    2   645.932  -1    1    1
 813    7    1   759.860  -1    1    1
 814    7    2   577.176  -1    1    1
 815    7    1   683.752  -1    1    1
 816    7    2   567.530  -1    1    1
 817    7    1   729.591  -1    1    1
 818    7    2   821.654  -1    1    1
 819    7    1   730.706  -1    1    1
 820    7    2   684.490  -1    1    1
 821    7    1   763.124  -1    1    1
 822    7    2   600.427  -1    1    1
 823    7    1   724.193  -1    1    1
 824    7    2   686.023  -1    1    1
 825    7    1   630.352  -1    1    1
 826    7    2   628.109  -1    1    1
 827    7    1   750.338  -1    1    1
 828    7    2   605.214  -1    1    1
 829    7    1   752.417  -1    1    1
 830    7    2   640.260  -1    1    1
 831    7    1   707.899  -1    1    1
 832    7    2   700.767  -1    1    1
 833    7    1   715.582  -1    1    1
 834    7    2   665.924  -1    1    1
 835    7    1   728.746  -1    1    1
 836    7    2   555.926  -1    1    1
 837    7    1   591.193  -1    1    1
 838    7    2   543.299  -1    1    1
 839    7    1   592.252  -1    1    1
 840    7    2   511.030  -1    1    1
 901    8    1   740.833  -1   -1    1
 902    8    2   583.994  -1   -1    1
 903    8    1   786.367  -1   -1    1
 904    8    2   611.048  -1   -1    1
 905    8    1   712.386  -1   -1    1
 906    8    2   623.338  -1   -1    1
 907    8    1   738.333  -1   -1    1
 908    8    2   679.585  -1   -1    1
 909    8    1   741.480  -1   -1    1
 910    8    2   665.004  -1   -1    1
 911    8    1   729.167  -1   -1    1
 912    8    2   655.860  -1   -1    1
 913    8    1   795.833  -1   -1    1
 914    8    2   715.711  -1   -1    1
 915    8    1   723.502  -1   -1    1
 916    8    2   611.999  -1   -1    1
 917    8    1   718.333  -1   -1    1
 918    8    2   577.722  -1   -1    1
 919    8    1   768.080  -1   -1    1
 920    8    2   615.129  -1   -1    1
 921    8    1   747.500  -1   -1    1
 922    8    2   540.316  -1   -1    1
 923    8    1   775.000  -1   -1    1
 924    8    2   711.667  -1   -1    1
 925    8    1   760.599  -1   -1    1
 926    8    2   639.167  -1   -1    1
 927    8    1   758.333  -1   -1    1
 928    8    2   549.491  -1   -1    1
 929    8    1   682.500  -1   -1    1
 930    8    2   684.167  -1   -1    1
 931    8    1   658.116   1   -1   -1
 932    8    2   672.153   1   -1   -1
 933    8    1   738.213   1   -1   -1
 934    8    2   594.534   1   -1   -1
 935    8    1   681.236   1   -1   -1
 936    8    2   627.650   1   -1   -1
 937    8    1   704.904   1   -1   -1
 938    8    2   551.870   1   -1   -1
 939    8    1   693.623   1   -1   -1
 940    8    2   594.534   1   -1   -1
 941    8    1   624.993   1   -1   -1
 942    8    2   602.660   1   -1   -1
 943    8    1   700.228   1   -1   -1
 944    8    2   585.450   1   -1   -1
 945    8    1   611.874   1   -1   -1
 946    8    2   555.724   1   -1   -1
 947    8    1   579.167   1   -1   -1
 948    8    2   574.934   1   -1   -1
 949    8    1   720.872   1   -1   -1
 950    8    2   584.625   1   -1   -1
 951    8    1   690.320   1   -1   -1
 952    8    2   555.724   1   -1   -1
 953    8    1   677.933   1   -1   -1
 954    8    2   611.874   1   -1   -1
 955    8    1   674.600   1   -1   -1
 956    8    2   698.254   1   -1   -1
 957    8    1   611.999   1   -1   -1
 958    8    2   748.130   1   -1   -1
 959    8    1   530.680   1   -1   -1
 960    8    2   689.942   1   -1   -1