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| Registros recuperados : 51 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
18/11/2019 |
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Data da última atualização: |
18/11/2019 |
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Autoria: |
TOEBE, M.; MACHADO, L. N.; TARTAGLIA, F. de L.; CARVALHO, J. O. de; BANDEIRA, C. T.; CARGNELUTTI FILHO, A. |
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Afiliação: |
Marcos Toebe, Universidade Federal de Santa Maria - UFSM/Departamento de Ciências Agronômicas e Ambientais; Letícia Nunes Machado, Universidade Federal do Pampa; Francieli de Lima Tartaglia, Universidade Federal de Santa Maria - UFSM/Departamento de Fitotecnia; Juliana Oliveira de Carvalho, Universidade Federal do Rio Grande do Sul - UFRGS/Departamento de Biociências; Cirineu Tolfo Bandeira, Universidade Federal de Santa Maria - UFSM/Departamento de Fitotecnia; Alberto Cargnelutti Filho, Universidade Federal de Santa Maria - UFSM/Departamento de Fitotecnia. |
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Título: |
Sample size for the estimation of Pearson?s linear correlation in crotalaria species. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, v. 54, e01027, jan.-dez. 2019. |
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Idioma: |
Inglês |
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Notas: |
Título em português: Tamanho de amostra para estimar coeficientes de correlação linear de Pearson em espécies de crotalária. |
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Conteúdo: |
The objective of this work was to determine the necessary sample size to estimate Pearson?s linear correlation coefficients of four species of crotalaria at precision levels. The experiment was carried out with Crotalaria juncea, Crotalaria spectabilis, Crotalaria breviflora, and Crotalaria ochroleuca, during the 2014/2015 crop year. Eight crotalaria traits were evaluated in 1,000 randomly collected pods per species. For each species, the correlation coefficients were estimated for the 28 pairs of traits, and the sample size necessary to estimate the correlation coefficients was determined at four precision levels [0.10, 0.20, 0.30, and 0.40 amplitudes of the 95% (CI95%) confidence interval] by resampling with replacement. The sample size varies between crotalaria species and, especially, between pairs of traits, as a function of the magnitude of the correlation coefficient. At a certain precision level, the smallest sample size is required to estimate the correlation coefficients between highly correlated traits and vice-versa. To estimate the correlation coefficients with CI95% of 0.20, 10 to 440 pods are required, depending on the species, pairs of traits, and magnitude of the correlation coefficient. |
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Palavras-Chave: |
Linear relationships; Precisão amostral; Reamostragem; Relação linear; Resampling; Sample precision. |
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Thesagro: |
Crotalária. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/204863/1/Sample-size-for-the-estimation-of-Pearsons.pdf
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Marc: |
LEADER 02168naa a2200277 a 4500
001 2114484
005 2019-11-18
008 2019 bl uuuu u00u1 u #d
100 1 $aTOEBE, M.
245 $aSample size for the estimation of Pearson?s linear correlation in crotalaria species.$h[electronic resource]
260 $c2019
500 $aTítulo em português: Tamanho de amostra para estimar coeficientes de correlação linear de Pearson em espécies de crotalária.
520 $aThe objective of this work was to determine the necessary sample size to estimate Pearson?s linear correlation coefficients of four species of crotalaria at precision levels. The experiment was carried out with Crotalaria juncea, Crotalaria spectabilis, Crotalaria breviflora, and Crotalaria ochroleuca, during the 2014/2015 crop year. Eight crotalaria traits were evaluated in 1,000 randomly collected pods per species. For each species, the correlation coefficients were estimated for the 28 pairs of traits, and the sample size necessary to estimate the correlation coefficients was determined at four precision levels [0.10, 0.20, 0.30, and 0.40 amplitudes of the 95% (CI95%) confidence interval] by resampling with replacement. The sample size varies between crotalaria species and, especially, between pairs of traits, as a function of the magnitude of the correlation coefficient. At a certain precision level, the smallest sample size is required to estimate the correlation coefficients between highly correlated traits and vice-versa. To estimate the correlation coefficients with CI95% of 0.20, 10 to 440 pods are required, depending on the species, pairs of traits, and magnitude of the correlation coefficient.
650 $aCrotalária
653 $aLinear relationships
653 $aPrecisão amostral
653 $aReamostragem
653 $aRelação linear
653 $aResampling
653 $aSample precision
700 1 $aMACHADO, L. N.
700 1 $aTARTAGLIA, F. de L.
700 1 $aCARVALHO, J. O. de
700 1 $aBANDEIRA, C. T.
700 1 $aCARGNELUTTI FILHO, A.
773 $tPesquisa Agropecuária Brasileira, Brasília$gv. 54, e01027, jan.-dez. 2019.
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Embrapa Unidades Centrais (AI-SEDE) |
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