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Externally studentized normal midrange distribution Ciência e Agrotecnologia
Batista,Ben Dêivide de Oliveira; Ferreira,Daniel Furtado; Chaves,Lucas Monteiro.
ABSTRACT The distribution of externally studentized midrange was created based on the original studentization procedures of Student and was inspired in the distribution of the externally studentized range. The large use of the externally studentized range in multiple comparisons was also a motivation for developing this new distribution. This work aimed to derive analytic equations to distribution of the externally studentized midrange, obtaining the cumulative distribution, probability density and quantile functions and generating random values. This is a new distribution that the authors could not find any report in the literature. A second objective was to build an R package for obtaining numerically the probability density, cumulative distribution and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Distribution function; Density function; Gauss-Legendre quadrature; Newton-Raphson method; R..
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000400378
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Speaking Stata: Graphing distributions AgEcon
Cox, Nicholas J..
Graphing univariate distributions is central to both statistical graphics, in general, and Stata’s graphics, in particular. Now that Stata 8 is out, a review of official and user-written commands is timely. The emphasis here is on going beyond what is obviously and readily available, with pointers to minor and major trickery and various user-written commands. For plotting histogram-like displays, kernel-density estimates and plots based on distribution functions or quantile functions, a large variety of choices is now available to the researcher.
Tipo: Journal Article Palavras-chave: Graphics; Histogram; Spikeplot; Dotplot; Onewayplot; Kdensity; Distplot; Qplot; Skewplot; Bin width; Rug; Density function; Kernel estimation; Transformations; Logarithmic scale; Root scale; Intensity function; Distribution function; Quantile function; Skewness; Research Methods/ Statistical Methods.
Ano: 2004 URL: http://purl.umn.edu/116213
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The weibull distribution to describe aboveground biomass of Lolium multiflorum Lam., in relation to rate of nitrogen application Agrociencia
Gorgoso-Varela,José Javier; Oliveira-Prendes,José Alberto; Afif-Khouri,Elías; Palencia,Pedro.
Abstract Characterization of forage biomass in pasture land is complicated by the temporal and spatial variability that result from variation in vegetation patch sizes. These factors along with topography, water location and distribution of fertilizer result in non-uniform grass. The aim of the study was to evaluate the use of the three-parameter Weibull distribution to describe aerial dry matter (DM) production in the first harvest of a mixture of three Italian ryegrass (Lolium multiflorum Lam.) cultivars (the tetraploid ‘Jivet’ and ‘Barspirit’, and the diploid ’Barprisma’) in Asturias (N Spain). The trial was established in a randomized complete block design with three blocks of 100 m2 (20 m x 5...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Productivity; Nitrogen fertilization; Density function; Moments; Italian ryegrass.
Ano: 2018 URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952018000100067
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