14-2 : Using the following data, prepare a run chart, scatter chart, and control chart. A late surgery is defined as any surgical operation that was started more than30 minutes after its scheduled time. ( Table 14-4 )
Table 14-4: Number of Late Surgeries
Month Number of Surgeries Number of Late Surgeries
______________________________________________________________________________________
Jan 435 112
Feb 401 129
Mar 572 186
April 409 103
May 577 89
June 329 67
July 467 156
Aug 301 94
Sept 235 89
Oct 325 127
Nov 378 156
Dec 444 124
Total 4873 1432
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