Anza Borrego Desert State Park - California State Parks - State of ...

Final Report – October 2001
140 140
120 120
100 100
80 80
Fall Fall
Spring Spring
60 60
40 40
20 20
0
18- 18-
25 25
26- 26-
30 30
31- 31-
35 35
36- 36-
40 40
41- 41-
45 45
46- 46-
50 50
51- 51-
55 55
56- 56-
60 60
61- 61-
65 65
66- 66-
70 70
71- 71-
75 75
76- 76-
80 80
80 80 +
Figure 6. Age of park visitors (by season)
A one-sample t-test suggests that there are significant differences in age-class
categories among Fall and Spring visitor groups, at p < .0005.
When visitor’s ages are compared among the six sites, there are slight differences, but
variability within sites is generally large enough to make these distinctions
inconsequential (Table 8). Mountain Palm Springs and Fish Creek are the possible
exceptions. The median age (52 years) at Mountain Palm Springs is slightly higher than
the overall median (49 years); the median age (46 years) of visitors surveyed at Fish
Creek is slightly below (Table 9, Figure 7).
Table 8. T-test of age differences (by season)
t df Sig (2-tail) Mean diff
95% Confidence Int.
Lower Upper
Fall 95.735 779 .000 46.94 45.97 47.90
Spring 104.391 990 .000 49.13 48.21 50.05
N Mean Std. Deviation Std. Error Mean
Fall 780 46.94 13.69 0.49
Spring 991 49.13 14.82 0.47
Table 9. Age of park visitors by site (both seasons)
Site Mean Age Median Age Std. Deviation (yrs)
Visitors Center 50.6 51.0 15.4
Mountain Palm Spr. 51.7 52.0 14.9
Borrego Palm Cyn. 47.6 48.0 15.4
Coyote Canyon 48.0 49.0 14.3
Blair Valley 49.7 49.0 12.1
Fish Creek 46.3 45.0 13.3
15