Project 4: The number of weekly "burr rejects" on two machines;
machine 3 and machine 4 for twelve consecutive weeks.

Col 1: Week number.
Col 2: Machine.
Col 3: Units produced.
Col 4: Number of rejects.

  1     3       263     11        
        4       244     20
  2     3       285      5
        4       336     14  
  3     3       201     10
        4       221     11
  4     3       435     21
        4       257      6
  5     3       133      2
        4       275      8
  6     3       375      3
        4       422     13
  7     3       321     10
        4       281     20
  8     3       307      4
        4       317     15
  9     3       294      3
        4       299     15
 10     3       348     13
        4       358     11
 11     3       331      0
        4       312      6
 12     3       296      1
        4       328      7