Table 2.

Evaluation of positive features of street trees in State College, Pennsylvania, comparing tree vs. no tree in front of residence (independent samples t-test).

Tree planted directly in front of house	Number^z	Mean	t-test	p^y
Give shade
Yes	567	2.50	3.105	.002*
No	106	2.18
Pleasing to the eye
Yes	565	2.86	2.126	.036*
No	103	2.70
Flowers on tree
Yes	550	1.20	−4.274	.000*
No	103	1.75
Fall color
Yes	562	2.53	−0.414	.679
No	106	2.57
Neighborhood more livable
Yes	560	2.75	2.723	.007*
No	105	2.51
Reduce noise
Yes	548	1.93	0.378	.706
No	102	1.89
Cool building in summer
Yes	559	1.90	0.483	.629
No	104	1.85
Increase privacy
Yes	563	1.85	−0.978	.328
No	104	1.96
Improve environment
Yes	560	2.73	1.474	.143
No	105	2.61
Attract birds
Yes	563	2.22	0.476	.634
No	105	2.17
Increase property value
Yes	548	2.31	3.136	.002*
No	102	2.00

↵^zSome questions were left unanswered on questionnaires; hence, not all totals are equal to 676.
↵^yAn asterisk indicates statistically significant at the .05 level.