Water Temperature in degrees Celcius 

Site 1 
Site 2 
Site 3 
Site 4 
Totals 

X 
X squ. 
X 
X squ. 
X 
X squ 
X 
X squ. 

Field Readings 
18 
324 
18 
324 
18 
324 
20.5 
420.25 

24 
576 
21.5 
462.25 
17.5 
306.25 
15.5 
240.25 

Sum X 
42 
39.5 
35.5 
36 

Sum X squared 
900 
786.25 
630.25 
660.5 

Mean 
21 
19.75 
17.75 
18 

(Sum X) squared/n 
882 
780.1 
630.125 
649 

Sum x squared 
18 
6.1 
0.125 
12.5 
36.7 

n (number of readings) 
2 
2 
2 
2 

degrees of freedom 
1 
1 
1 
1 
4 

Pooled s squared 
9.2 

Standard Deviation 
3.03 

Level of Significant Difference (5%) 
8.41 
There is no significant differences between temperatures at the four sites.
Statistical Analysis of pH and concentrations of Carbon Dioxide, or Oxygen
pH 

Site 1 
Site 2 
Site 3 
Site 4 
Totals 

X 
X squ. 
X 
X squ. 
X 
X squ 
X 
X squ. 

Field Readings 
10 
100 
9 
81 
7.7 
56.25 
9.5 
90.25 

10 
100 
9.8 
96.04 
7.5 
56.25 
9.5 
90.25 

10 
100 
8 
64 
7 
49 
9 
81 

10 
100 
9 
81 
8 
64 
9 
81 

Sum X 
40 
35.8 
30 
37 

Sum X squared 
400 
322.04 
225.5 
342.5 

Mean 
10 
8.95 
7.5 
9.25 

(Sum X) squared/n 
400 
320.41 
222 
342.25 

Sum x squared 
0 
1.63 
0.5 
0.25 
2.38 

n (number of readings) 
4 
4 
4 
4 

degrees of freedom 
3 
3 
3 
3 
12 

Pooled s squared 
0.198 

Standard Deviation 
0.315 

Level of Significant Difference (5%) 
0.686 
Statistical Analysis of Water Temperature and concentrations of Carbon Dioxide, or Oxygen