Source of variation for the non-metals

Sum of squares

Degrees of freedom

Variance estimate for the non-metals

Between water samples

14787.56

2

14787.56/2

Within water samples

72318.92

9

72318.92/9

Total

87104.4

11

Source of variation for the heavy metals

Sum of squares

Degrees of freedom

Variance estimate for the heavy metals

Between water samples

86.88

2

86.88/2

Within water sample

1528.7

6

1528.7/6

Total

1615.58

8