Part II: Section A
 
Using GIS Technology
4.3 Tables

Maps provide a visualization of spatial data, but they can fall short when used to summarize the attribute data and analysis results. Tables are an excellent device for summarizing the attribute information contained within the maps (Figures IIA-37 and IIA-38).

Figure IIA-37: Summary table of yield data for a wheat field.

 

0
Exclosure
No to Light Grazing
Moderate Grazing
Heavy Grazing
Water Impact
# of Observations
85
2454
6831
2435
464
Yield (g/m2)
513
483
452
374
303
STDV
82
63
54
86
823

 

Figure IIA-38: Results of a paired t-test for a wheat field.

 

t-Test: Paired Two Assuming Equal Variances
0
Exclosures
No April/Light March Grazing
Mean
12182.24112
430.23704569
Variance
12182.24112
9164.037935
Observations
96
1679
Pooled Variance
9325.75779
0
Hypothesized Mean Difference
0
0
df
1773
0
t Stat
9.548361188
0
P(T<=t) one-tail
2.09803E -21
00
t Critical one-tail
1.645712473
0
P(T<=t) two-tail
4.19606E -21
0
t Critical two-tail
1.961302587
0
 
<< previous page  
1. Introduction
2. Data Collection
3. Data Analysis
4. Findings/Summary
- 4.1 Maps
- 4.2 Charts
- 4.3 Tables
 
All information, data, design, and graphics are copyright (c) 2003 Dept of Rangeland Resources, Oregon State University. All rights reserved.