Two Methods of Valuating Trees on Residential Sites

Article Figures & Data

Table 1.

Means and standard deviations of independent & dependent variables

Variable identification	Variable number	Mature tree cover		No tree cover		Both data sets
Variable identification	Variable number	Mean	Standard deviation	Mean	Standard deviation	Mean	Standard deviation
Date of sale	2	77.8	1.4	77.4	0.6	77.3	0.7
No. of rooms	3	7.7	0.9	7.7	0.6	7.7	0.8
Sq. ft. of lot	4	14,395	2.2	15,820	3.1	15,107	2.7
No. of fireplaces	5	1.04	0.21	1.00	0.0	1.02	0.15
Age in years	6	4.6	0.49	4.27	0.55	4.45	0.54
No. of garages	7	2.0	0.4	2.0	0.0	2.0	0.3
Sq. ft. of house	8	1900	408	1837	235	1868	331
Sales price	1	60,614	14	51,108	4	55,872	10

Table 2.

Qty., Species	Diam. (cm)	Condition	Value
1 beech	30	Poor	$200
1 sweet birch	20	Dead	—
5 sweet birch, average	20	Poor	400
1 hickory	25	Good	600
1 ash	30	Good	500
1 swamp red maple	36	Poor	250
1 hickory	28	Fair	300
1 swamp red maple	25	Fair	250
1 ash	15	Fair to good	175
1 hickory	25	Good	450
1 swamp red maple	36	Fair	500
1 sugar maple	25	Fair	400
1 hickory	28	Fair	450
1 swamp red maple	10	Poor to fair	50
1 hickory	35	Good	600
1 beech	20	Poor	175
1 ash	30	Good	400
1 beech	23	Fair	150
Total Appraisal Value of Trees:			5850