Avaliação de procedimentos de comparações múltiplas em trabalhos publicados na revista Horticultura Brasileira de 1.983 a 2.000

Neto, Francisco Bezerra; Nunes, Glauber H. S.; Negreiros, Maria Zuleide de

doi:10.1590/s0102-05362002000100001

Cited by 9 publications

(11 citation statements)

References 10 publications

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“…These results contrasted with those presented by Cardellino and Siewerdt (1992), Santos et al (1998), Bezerra Neto et al (2002), and Bertoldo et al (2008b, in which this situation was reported as being very common. This divergence suggests an observed improvement in the use of MCTs in experiments related to quantitative treatments.…”

Section: Statistical Procedures Used and The Quality Of Selection Andcontrasting

confidence: 90%

“…The extensive use of the Tukey test confirms the results presented by Santos et al (1998), Bezerra Neto et al (2002) and Lúcio et al (2003). This is a rigorous test, but with less power (sensitivity) than the other MCT (Vieira, 2006).…”

Section: Statistical Procedures Used and The Quality Of Selection Andsupporting

confidence: 77%

“…A few studies have assessed these difficulties from the different perspectives of agricultural sciences. For example, 35 % of the articles in the journal Horticultura Brasileira and 57 % of the articles in Pesquisa Agropecuária Brasileira were classified as "incorrect or partially correct" and "inadequate", respectively, with respect to the use of mean comparison tests (MCTs) (Santos et al, 1998;Bezerra Neto et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

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An Evaluation of the Use of Statistical Procedures in Soil Science

Tavares

Carvalho

Machado

2016

Rev. Bras. Ciênc. Solo

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Experimental statistical procedures used in almost all scientific papers are fundamental for clearer interpretation of the results of experiments conducted in agrarian sciences. However, incorrect use of these procedures can lead the researcher to incorrect or incomplete conclusions. Therefore, the aim of this study was to evaluate the characteristics of the experiments and quality of the use of statistical procedures in soil science in order to promote better use of statistical procedures. For that purpose, 200 articles, published between 2010 and 2014, involving only experimentation and studies by sampling in the soil areas of fertility, chemistry, physics, biology, use and management were randomly selected. A questionnaire containing 28 questions was used to assess the characteristics of the experiments, the statistical procedures used, and the quality of selection and use of these procedures. Most of the articles evaluated presented data from studies conducted under field conditions and 27 % of all papers involved studies by sampling. Most studies did not mention testing to verify normality and homoscedasticity, and most used the Tukey test for mean comparisons. Among studies with a factorial structure of the treatments, many had ignored this structure, and data were compared assuming the absence of factorial structure, or the decomposition of interaction was performed without showing or mentioning the significance of the interaction. Almost none of the papers that had split-block factorial designs considered the factorial structure, or they considered it as a split-plot design. Among the articles that performed regression analysis, only a few of them tested non-polynomial fit models, and none reported verification of the lack of fit in the regressions. The articles evaluated thus reflected poor generalization and, in some cases, wrong generalization in experimental design and selection of procedures for statistical analysis.

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Section: Statistical Procedures Used and The Quality Of Selection Andcontrasting

confidence: 90%

Section: Statistical Procedures Used and The Quality Of Selection Andsupporting

confidence: 77%

Section: Introductionmentioning

confidence: 99%

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An Evaluation of the Use of Statistical Procedures in Soil Science

Tavares

Carvalho

Machado

2016

Rev. Bras. Ciênc. Solo

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“…, em que 2 é a estimativa da variância da amostra (BUSSAB; MORETTIN, 2017;MAROCO, 2007 Nos últimos anos, discussões sobre o uso adequado dos testes estatísticos foram realizadas, refletindo preocupação por parte dos pesquisadores na forma de utilizar e aplicar os testes em seus estudos (BERTOLDO et al, 2008;DAMÁSIO, 2012;LOVATTO et al, 2007;BEZERRA NETO;NUNES;NEGREIROS, 2002;RONDINI et al, 2016;SOUSA et al, 2012 Bonferroni e menos flexíveis como LSD pode sugerir uma preocupação em não apresentar resultados falsamente positivos, isto é, controle do erro tipo 1 (BERTOLDO et al, 2008;CARDELLINO, 1992;SAX, 1986). Salienta-se que a correta descrição dos índices que compõem determinado teste estatístico aplicado em pesquisas científicas configura-se como condição fundamental para que possa ocorrer a replicabilidade desses resultados (COZBY, 2006).…”

Section: Softwares De Licença Comercial Ibm Statistical Package For Tunclassified

Um Estudo sobre a Utilização da ANOVA de uma Via na Produção Científica na Área de Psicologia

2018

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“…Quando o interesse é comparar todos os pares de médias entre si, neste caso deve-se escolher um procedimento de comparação múltipla tal como o de Tukey (BEZERRA NETO; NUNES; NEGREIROS, 2002).…”

Section: Materiais E Métodosunclassified

Variáveis De Custos De Produção Da Cana-De-Açúcar E Suas Diferenças Entre as Regiões Produtoras

Pereira

2017

Rev. Agro. Amb.

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RESUMO:Diante da importância do agronegócio brasileiro para a economia nacional e do crescimento da produção no setor sucroenergético, a avaliação dos custos das regiões produtoras pode melhorar a alocação dos recursos produtivos. O objetivo deste trabalho foi identificar as diferenças dos custos de produção da cana-de-açúcar das regiões Nordeste, Centro-Sul tradicional e Centro-Sul expansão, no que diz respeito às safras 2007/2008 a 2011/2012 no Brasil. A pesquisa se caracterizou como descritiva, utilizando-se de procedimento técnico documental e abordagem quantitativa. Os testes estatísticos aplicados foram Tukey e KruskalWallis para identificar quais custos sofreram variações estatisticamente significativas entre as regiões. Os resultados mostram que o maior custo médio da atividade se refere à mecanização nas regiões Centro-Sul tradicional e Centro-Sul expansão, enquanto na região Nordeste se relaciona à mão de obra. Das variáveis analisadas apenas mecanização, arrendamento da terra e mão de obra apresentaram diferenças estatisticamente significativas. PALAVRAS-CHAVE:Custos; Cana-de-açúcar; Brasil. COSTS VARIABLES IN SUGAR-CANE PRODUCTION AND DIFFERENCES BET WEEN PRODUCING REGIONSABSTRACT: In the wake of the importance of Brazilian agribusiness for national economy and production growth within the sugarcane-fuel sector, costs assessment of producing areas may improve the establishment of production. Current analysis identifies the differences in production costs of sugarcane in the northeastern region of Brazil, the traditional center-south area and the center-south expansion area with regard to harvests between 2007/2008 and 2011/2012 in Brazil. Descriptive research employed documental and technical procedures and a quantitative approach. Tukey´s and Kruskal-Wallis´s statistical tests identified which costs had the highest statistically significant variations among the regions. Results show that highest mean cost implies mechanization in the traditional and expansion center-south region, whereas man power is proper to the northeastern region. Mechanization, land rent

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Avaliação de procedimentos de comparações múltiplas em trabalhos publicados na revista Horticultura Brasileira de 1.983 a 2.000

Abstract: Assessment of multiple-comparison procedures of published articles in the journal Horticultura Brasileira from 1,983 to 2,000.

Cited by 9 publications

References 10 publications

An Evaluation of the Use of Statistical Procedures in Soil Science

An Evaluation of the Use of Statistical Procedures in Soil Science

Um Estudo sobre a Utilização da ANOVA de uma Via na Produção Científica na Área de Psicologia

Variáveis De Custos De Produção Da Cana-De-Açúcar E Suas Diferenças Entre as Regiões Produtoras

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