Daily crime flows within a city

Crime Science

Table 8 Quadratic equation relating crimes to visitors for work, shopping, and recreation, Eastern Canadian city

\( {\text{C }} = {\text{ a }} + {\text{ b W }} + {\text{ c W}}^{ 2} + {\text{ d Q}} + {\text{ e Q}}^{ 2} + {\text{ f Z }} + {\text{ g Z}}^{ 2} \)
		Property crimes	Violent crimes
Intercept	Constant: a	74.3**	27.5**
W = for work	Main effect: (10³) b	828.2*	1.1*
W = for work	Quadratic effect: (10⁶) c	−0.1**	0.0
Q = for shopping	Main effect: (10³) d	25.0**	8.4**
Q = for shopping	Quadratic effect: (10⁶) e	0.7	−0.6**
Z = for recreation	Main effect: (10³) f	81.8**	19.8**
Z = for recreation	Quadratic effect: (10⁶) g	−4.2	0.1
Multiple R		0.919	0.658

The main effects and quadratic effects are displayed at different exponential levels
Base N = 506 census tracts
* Significant at 0.05
** Significant at 0.01

ISSN: 2193-7680