Statistical Analysis

Concentrations of Carbon Dioxide in ppm

Site 1

Site 2

Site 3

Site 4

Totals

X

X squ.

X

X squ.

X

X squ

X

X squ.

Field Readings

0

0

0

0

2

4

0

0

0

0

0

0

3

9

0

0

0

0

0

0

3.5

12.25

0

0

0

0

0

0

2.5

6.25

0

0

Sum X

0

0

11

0

Sum X squared

0

0

31.5

0

Mean

0

0

1.25

0

(Sum X) squared/n

0

0

30.25

0

Sum x squared

0

0

1.25

0

1.25

n (number of readings)

4

4

4

4

degrees of freedom

3

3

3

3

12

Pooled s squared

0.104

Standard Deviation

0.228

Level of Significant Difference (5%)

0.497

Site 3 differed significantly from the other sites in concentrations of Carbon Dioxide

 Statistical Analysis of Water Temperature, pH, Oxygen Concentration

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