Owoloko, E. A. and Alika, J. E.
(2010)
The Effect of Fixed and Random Models in the
Interpretation of Biological Data.
Journal of Mathematics and Statistics, 6 (1).
pp. 68-71.
ISSN 1549-3644
Abstract
Problem statement: Data on variation of sugar content in maize Ogi, fermented maize flour, obtained from 4 maize hybrids subjected to 5 different days of fermentation were used to test the effects of fixed and random statistical models on the interpretation of biological results. Approach: The data were subjected to analysis of variance using both fixed and random models. Results: Highly
significant difference (p = 0.1) was present among hybrids, days of fermentation and interaction of hybrids and days, where the fixed model was used. On the other hand, where the random model was assumed, the interaction component of variance was found not to be significantly different from zero contrary to the findings with the fixed model. Conclusion/Recommendations: The results indicate
that the statistical model used may influence interpretation of biological results.
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