2011 Annual Report final - City of Pittsburgh
2011 Annual Report final - City of Pittsburgh
2011 Annual Report final - City of Pittsburgh
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9. Date/Time Analysis <strong>of</strong> Pursuits:102The average monthly number <strong>of</strong> pursuits was 10. The months <strong>of</strong> March, April and June exceeded thisaverage by more than one standard deviation each. The monthly distribution is shown below:Pursuits by Month <strong>of</strong> Year18161417141612108696710 108 789420JanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberMost pursuits occur on the P.M. (3 p.m. thru 11 pm.) shift as shown on the pie chart below:DecemberPursuits by ShiftA.M.8, 7%Night47, 39%P.M.66, 54%Further analysis <strong>of</strong> the shift shows that a majority (52%) <strong>of</strong> the P.M. shift pursuits happen onWednesday through Friday. A majority (53%) <strong>of</strong> the Night shift (11 p.m. through 7 a.m.) happen onFriday and Saturday. This is shown in the following crosstab:A.M. P.M. Night TotalSunday 0 7 4 11Monday 3 8 3 14Tuesday 0 9 6 15Wednesday 0 10 7 17Thursday 1 14 2 17Friday 3 10 9 22Saturday 1 8 16 25Total 8 66 47 121