Avaliação de testes estatísticos de comparações múltiplas de médias

Sousa, Carlos Antônio Ferreira de; Lira, M. A.; Ferreira, Rinaldo Luíz Caraciolo

doi:10.1590/s0034-737x2012000300008

Cited by 22 publications

(17 citation statements)

References 11 publications

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“…These tests are indicated for comparison between samples of different sizes. (8) The development of the study met the national and international standards of ethics in research involving human beings.…”

Section: Methodsmentioning

confidence: 99%

“…Subsequently four behavioral competencies were defined: Directive, Supportive, Participative and Achievement-Oriented Leader Behavior. (5,7,8) The objectives of this study were to translate the scale from English to Portuguese and adapt it to the Brazilian culture through application with professionals in the field of hospital nursing; to evaluate the psychometric properties of the translated and adapted version; and to present the assessments of the subscales Charismatic, Instrumental Leadership and of Satisfaction, Motivation and Team Effectiveness.…”

Section: Introductionmentioning

confidence: 99%

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Adaptação e validação da Escala de Liderança Carismática Socializada

Chavaglia

Coleta

et al. 2013

Acta paul. enferm.

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Objective: Adapting the Charismatic Leadership Socialized Scale for the Brazilian culture and evaluating the psychometric properties of the translated and adapted version. Methods: The translated and adapted version of the scale was answered by 211 nursing staff professionals. The SPSS program was used to verify the principal components, the loading factors of each item on the subscales by the Principal Component Analysis and the Varimax rotation test, and the internal consistency of subscales by calculating Cronbach's alpha index. The means of groups on each scale were compared by the one-way analysis of variance (ANOVA), verifying the significance of differences with Tukey's test. Results: The scale showed consistent psychometric properties converging to a stable factor structure and a suitable reliability that was very close to the original study. Conclusion:The results support the psychometric properties of the scale, indicating its applicability for research in hospital settings nationwide. ResumoObjetivo: Adaptar a escala Charismatic Leadership Socialized Scale à cultura brasileira e avaliar as propriedades psicométricas da versão traduzida e adaptada. Métodos: A escala traduzida e adaptada foi respondida por 211 profissionais da equipe de enfermagem. Utilizou-se o programa SPSS, onde foram verificados os componentes principais e as cargas fatoriais de cada item nas subescalas pelo Método dos Componentes Principais e teste de rotação Varimax, e a consistência interna das subescalas pelo cálculo do índice alfa de Cronbach. Também se comparou as médias dos grupos em cada escala pela análise de variância one-way (ANOVA), verificando-se a significância das diferenças pelo teste de Tukey. Resultados: A escala apresentou consistentes propriedades psicométricas convergentes a uma estrutura estável do fator e confiabilidade adequada muito próxima ao estudo original. Conclusão: Os resultados reforçam as qualidades psicométricas da escala, indicando sua aplicabilidade para pesquisas no contexto hospitalar nacional.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Adaptação e validação da Escala de Liderança Carismática Socializada

Chavaglia

Coleta

et al. 2013

Acta paul. enferm.

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“…The data were submitted to the Tukey test, at 5% probability, which allows the comparison of means, specifying which treatments differ statistically from the others [11].…”

Section: Methodsmentioning

confidence: 99%

Seed counting system evaluation using arduino microcontroller

et al. 2018

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The development of automated systems has been highlighted in the most diverse productive sectors, among them, the agricultural sector. These systems aim to optimize activities by increasing operational efficiency and quality of work. In this sense, the present work has the objective of evaluating a prototype developed for seed count in laboratory, using Arduino microcontroller. The prototype of the system for seed counting was built using a dosing mechanism commonly used in electric motor seeders, Arduino Uno, with light dependent resistors and light emitting diodes. To test the prototype, a completely randomized design (CRD) was used in a twofactorial scheme composed of three groups defined according to the number of seeds (500, 1000 and 1500 seeds tested), three speeds of the dosing disc that allowed the distribution in 17, 21 and 32 seeds per second, with 40 repetitions evaluating the seed counting prototype performance in different speeds. The prototype of the bench counter showed a moderate variability of counted seed number within the nine tests and a high precision in the seed count on the distribution speeds of 17 and 21 seeds per second (s -1) up to 1500 seeds tested. Therefore, based on the observed results, the developed prototype presents itself as an excellent tool for counting seeds in laboratory.

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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).…”

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