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Table 2 ANOVA to explain changes in compressive strength – variables are treatment, porosity values and late compressive strength test performance

From: Time impacts of treating pervious concrete with sodium bicarbonate

 

Sum of squares

Degrees of freedom

Mean square

F-statistic

P-value

Effect size (Æž2)

Treatment

4.20

1

4.20

1.35

0.250

1.08%

Porosity

125

1

125

40.1

1.63E-08

32.0%

Later C.S. test

27.0

1

27.0

8.66

0.00432

6.93%

Error

234

75

3.12

1.00

0.500

Â