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Table 7 Quadratic equations relating crimes to visitors for work, shopping, recreation, and education, Eastern Canadian city

From: Daily crime flows within a city

Visitor counts

Crime counts

Equation form: \( Y \, = \, a \, + \, b \, X \, + \, c \, X2 \)

Constant a

Main effect (103) b

Quadratic effect (106) c

Multiple R

For work

Property

107.3**

42.9**

−0.2**

0.878

Violent

36.0**

4.9**

−0.03**

0.547

For shopping

Property

116.9**

115.3**

−1.7

0.657

Violent

34.2**

20.6**

−1.0**

0.470

For recreation

Property

84.7**

158.8**

11.7**

0.804

Violent

28.4**

29.2**

−0.2

0.637

For education

Property

136.2**

68.3**

−3.2**

0.310

Violent

36.5**

12.1**

−0.6**

0.311

  1. Base N = 506 census tracts
  2. ** Significant at 0.01 level