Referencing Styles : APA 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 than 30 minutes after its scheduled time (Table 14-4). Table 14-4 Number of Late Surgeries Month Number of Surgeries Number of Late Surgeries January 435 112 February 401 129 March 572 186 April 409 103 May 577 89 June 329 67 July 467 156 August 301 94 September 235 89 October 325 127 November 378 156 December 444 124 Total 4873 1432