This is data file    TANG.DAT
Drop Rate / Bandwidth / File Size   Effect on Apache/Linux
     Net Processing Time
2**3 Full Factorial Design with replicated center points
Response variable                  = processing time (seconds)
Number of observations             = 8
Number of variables per line image = 4
Order of variables on a line image--
   1. Response variable   = processing time (seconds)
   2. Factor 1            = drop rate (2 levels--0%    and 10%)
   3. Factor 2            = bandwidth (2 levels--10 Mb and 100 Mb)
   4. Factor 3            = file size (2 levels--10 kb and 100 kb)
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   READ TANG.DAT Y X1 X2 X3







   Y          X1         X2         X3
  Time    Drop Rate  Bandwidth  File Size
------------------------------------------
 0.102408      -1         -1         -1
 0.611606      +1         -1         -1
 0.613311      -1         +1         -1
 0.203805      +1         +1         -1
 9.476249      -1         -1         +1
 9.146300      +1         -1         +1
 9.293824      -1         +1         +1
10.789047      +1         +1         +1
 4.737280       0          0          0
 2.805004       0          0          0