Electronic Journal of Biotechnology ISSN: 0717-3458
  © 2003 by Universidad Católica de Valparaíso -- Chile
Vol. 6 No. 3, Issue of December 15, 2003 
 

Appendix

Table A.1. Example of analysis of variance. The complete results of the analysis of variance (López, 1988) for the mean solids content in the case of marine propeller are presented in the table. Similar results were obtained for exit solids and the pitched-blade turbine.

Table A.1. Analysis of variance for mean solids concentration, 3MPU.


Effect

Sum of squares

Degrees of freedom

Mean square

F-values

p-values

A: aeration rate

0.9301

1

0.9301

372.05

0.0027

B: agitation rate

0.8206

1

0.8206

328.25

0.0030

C: impeller height

0.9063

1

0.9063

362.53

0.0027

AB

0.0630

1

0.0630

25.20

0.0375

AC

0.0351

1

0.0351

14.04

0.0644

BC

0.0136

1

0.0136

5.44

0.0448

AA

1.0400

1

1.0400

416.02

0.0024

BB

0.3101

1

0.3101

124.04

0.0080

CC

0.8886

1

0.8886

355.45

0.0028

Error

0.1452

5

0.1452

11.62

0.0812

R2 = 0.966046;  p<0.01, significant effect


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