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Table 1 Descriptive statistics of data set
Variables | Min | Max | Mean | SD |
|---|---|---|---|---|
a) Year 2014 (N=31) | ||||
 Inputs | ||||
  Police Station (PS) | 0.09 | 1.07 | 0.3620 | 0.21626 |
  Road Maintenance Depot (RMD) | 0.14 | 3.47 | 1.1341 | 0.71446 |
  Equipment & Vehicles (E&V) | 6.92 | 39.73 | 20.1556 | 8.03757 |
  Camera (C) | 0.18 | 5.60 | 1.4881 | 1.20887 |
  Emergency Medical Service (EMS) | 1.06 | 7.47 | 2.3653 | 1.35491 |
  Road with Lighting System (RLS) | 0.92 | 29.81 | 7.5306 | 7.40396 |
 Output | ||||
  FR−1 | 0.13 | 7.77 | 1.1632 | 1.37304 |
b) Year 2015 (N=31) | ||||
 Inputs | ||||
  Police Station (PS) | 0.11 | 1.02 | 0.3591 | 0.21112 |
  Road Maintenance Depot (RMD) | 0.17 | 3.31 | 1.1205 | 0.69042 |
  Equipment & Vehicles (E&V) | 9.21 | 37.91 | 20.4749 | 7.23863 |
  Camera (C) | 0.42 | 6.93 | 1.8415 | 1.57520 |
  Emergency Medical Service (EMS) | 1.20 | 7.63 | 2.4252 | 1.32906 |
  Road with Lighting System (RLS) | 0.94 | 30.42 | 8.0667 | 7.81487 |
 Output | ||||
  FR−1 | 0.16 | 8.03 | 1.1376 | 1.40518 |
c) Year 2016 (N=31) | ||||
 Inputs | ||||
  Police Station (PS) | 0.09 | 1.06 | 0.3586 | 0.21049 |
  Road Maintenance Depot (RMD) | 0.18 | 3.17 | 1.1215 | 0.69748 |
  Equipment & Vehicles (E&V) | 8.74 | 39.26 | 19.8316 | 7.20473 |
  Camera (C) | 0.65 | 10.49 | 2.6766 | 2.45488 |
  Emergency Medical Service (EMS) | 1.12 | 7.32 | 2.4191 | 1.31821 |
  Road with Lighting System (RLS) | 1.27 | 31.91 | 8.2670 | 7.64173 |
 Output | ||||
  FR−1 | 0.12 | 5.12 | 0.8052 | 0.87499 |