Classification of the coefficient of variation for experiments with eucalyptus seedlings in greenhouse

Abstract

In experimental statistics, the variability, which allows for conclusions related to experimental accuracy, is
usually demonstrated by means of experimental coeffi cient of variation (CV). The aims of this study were to evaluate the
distribution of CV in several experiments of eucalyptus growth, compare the existing classifi cation ranges proposed in the
literature (methods proposed by Garcia; Costa, Seraphin and Zimmermann, and Pimentel-Gomes), and defi ne the better one to
be used as reference for eucalyptus seedlings cultures in greenhouses or protected cultivation. For that, a blank test with 100
repetitions was conducted and evaluations were performed in 30, 60, 90 and 120 days. Moreover, previous data from literature
were collected, for comparison proposes. The obtained results were submitted to Shapiro-Wilk and Kolmogorov-Smirnov tests,
and the classifi cation tables were submitted to adherence and heterogeneity tests. As a result, it was possible to conclude that data
obtained with the experiments with eucalyptus in the present research did not fi t the classifi cation of Pimentel-Gomes and tables
obtained by Costa, Seraphin and Zimmermann, while the tables related to the method proposed by Garcia would be preferably used.