Table 7 Testing hypotheses with analysis of variance.

From: An experimental and statistical investigation into the optimisation of eco-friendly concrete incorporating agricultural and industrial wastes

Compressive Strength

Source

Sum of Squares

df

Mean Square

f-value

p-value

 

Model

110.0562

10

12.2295

28.0581

0.00028

Significant

A- Fly Ash

14.9079

1

14.9079

34.1961

0.00086

 

B- Rice Husk

3.1062

1

5.022

0.627378

0.4117

 

C- Fire Clay

4.6593

1

4.6593

0.582087

0.4277

 

Residual

2.4273

7

7.4493

0

0

 

Cor Total

112.4835

16

0

0

0

 

Flexural Strength

Model

0.82863

12

0.092349

6.9657

0.0116

significant

A- Fly Ash

0.605523

1

0.605523

44.6214

0.00038

 

B- Rice Husk

0.01674

1

0.01674

1.2834

0.2766

 

C- Fire Clay

0.000465

1

0.000465

0.036642

0.8152

 

Residual

0.07347

7

0.012276

0

0

 

Lack of Fit

0.072912

6

0.01488

147.8514

0.0576

significant

Pure Error

0.0001

1

0.0001

   

Cor Total

      
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