Rank-ordering coefficients of variation for popping expansion - doi: 10.4025/actasciagron.v33i3.11911

Emmanuel Arnhold; Klayton Flávio Milani

doi:10.4025/actasciagron.v33i3.11911

Rank-ordering coefficients of variation for popping expansion - doi: 10.4025/actasciagron.v33i3.11911

Emmanuel Arnhold Universidade Federal do Goiás (UFG)
Klayton Flávio Milani Universidade Estatual de Maringá (UEM)

DOI: https://doi.org/10.4025/actasciagron.v33i3.11911

Keywords: Zea mays, dispersion measurement, genetic improvement, precision, accuracy

Abstract

The coefficient of variation (CV) has been the most important statistic to determine the precision of experimental errors, but an even classification for guiding popcorn breeders is still lacking for popping expansion. The normality of data from 50 CVs was tested through the Shapiro-Wilk test, and the mean (m), median, standard deviation (SD), maximum and minimum values, asymmetry and kurtosis were all determined using the momentum method. The CVs were ranked as low [CV ≤ (m - 1 SD)], moderate [(m - 1 SD) < CV ≤ (m + 1 SD)], high [(m + 1 SD) < CV ≤ (m + 2 SD)] and very high [CV > (m + 2 SD)]. In summary, these data were close to the normality because the slight and flattened curve was skewed to the right. The CV’s mean was 11.08, the median was 11.94 and the standard deviation was 5.13%. Accordingly, values of CV ≤ 5.95% are low, 5.95 < CV ≤ 15.21% are moderate, 15.21 < CV ≤ 20.34% are high, and CV > 20.34% are very high.

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Author Biography

Emmanuel Arnhold, Universidade Federal do Goiás (UFG)

Possui graduação em Engenharia Agronômica pela Universidade Federal de Viçosa (2002), Mestrado em Genética e Melhoramento pela Universidade Federal de Viçosa (2004) e Doutorado em Genética e Melhoramento pela Universidade Federal de Viçosa (2006). Atualmente é Professor Adjunto I na Universidade Federal do Maranhão (UFMA), no Campus de Ciências Agrárias e Ambientais (CCAA).Tem experiência na área de Agronomia, com ênfase em Melhoramento Vegetal e Estatística Aplicada, atuando principalmente nos seguintes temas: melhoramento, genética quantitativa, biometria e estatística aplicada. Endereço para acessar Curículo Lattes: http://lattes.cnpq.br/7156945506134934

Published

2011-04-11

How to Cite

Arnhold, E., & Milani, K. F. (2011). Rank-ordering coefficients of variation for popping expansion - doi: 10.4025/actasciagron.v33i3.11911. Acta Scientiarum. Agronomy, 33(3), 527-531. https://doi.org/10.4025/actasciagron.v33i3.11911

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Issue

Vol 33 No 3 (2011)

Section

Crop Production

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