ESTATISTICA BASICA BUSSAB E MORETTIN PDF
4 set. WILTON DE O. BUSSABPEDRO A. MORETTIN ESTATÍSTICA BÁSICA www. Pedro A. MorettinWilton de O. Bussab 6 a. View Homework Help – Estatística Básica – Morettin e Bussab from ESTATÍSTI at UFF. Estatistica Basica · Calculo · Analise de Series Temporais · Econometria Financeira · Introducao ao Calculo · Ondas e Ondaletas · Wavelets in Functional Data.
|Published (Last):||15 March 2005|
|PDF File Size:||19.55 Mb|
|ePub File Size:||11.60 Mb|
|Price:||Free* [*Free Regsitration Required]|
It is important to mention that given the observed results, the jack bean provides greater dry mass production and consequently greater soil cover in relation to D.
Introduction The Cerrado occupation has extatistica quickly, based on intensive production systems, which have increased the processes of soil degradation Silva et al. In the Cerrado of Central Brazil is sown until the end of the rainy season, because of drought resistance and little sensitivity to photoperiod Calegari et al. These results confirm the variability among the variables and among green manure species, corroborating baaica results obtained by Cargnelutti Filho et al.
Sample size to estimate biomass and productivity of Canavalia ensiformis and Dolichos lablab.
Enrico Eduardo – Google+
The Cerrado occupation has occurred quickly, based on intensive production systems, which have increased the processes of soil degradation Silva et al.
Moreover, this is a crop that can be considered for family estafistica because of its high seed production and high prices in the market.
In agricultural systems in areas of Cerrado are used intercropped with maize and perennial crops, because tolerates partial shade Carvalho and Amabile, Variables evaluated in C. Sample size to estimate the average of each character in C.
Results and Discussion The calculation of central tendency, variability, asymmetry, kurtosis and Lilliefors test relatively to morphological variables fresh mass, dry mass and C.
BUSSAB E MORETTIN Estatística Básica 6a Edição ( 1)
The spacing used was 0. Canavalia ensiformi showed significant higher values for the mean fresh mass production, dry mass and productivity in relation to Dolichos lablabbeing recommended for cultivation in Brazilian Cerrado.
Although the data can produce reliable results in a given study, it is important to determine the sample size in order to estimate the average of each variable, with high confidence and a given estimation error. These processes result in impacts that often generate the inefficiency of esyatistica systems, with frequent need for interventions through conservation practices to maintain the productive potential of the soil.
Among the various botanical families species that can be grown as green manures, stand out those of the Fabaceae family. In this context, green manure becomes fundamental to the Cerrado region, because it promotes protection, improvement and maintenance of soil quality, as well as substantial increases in soil organic matter and nutrients, benefiting agroecosystems Motettin et al. Measures of central tendency, variability, asymmetry and kurtosis were calculated and normality of the variables under study was checked by the Lilliefors test.
Porto Alegre, Bookman, p. Given these considerations in relation to normality, it can be inferred that the data from these variables provide credibility to the scaling basoca the sample size study.
Estatística Básica – Morettin e Bussab | Rodolfo Nunes –
Tamanho da amostra para estimativa da biomassa e produtividade de Canavalia ensiformis e Dolichos lablab. Considering these same parameters for the D. However, according to the central limit theorem, even if the basic population is not normal, the distribution of the sample mean will be approximately normal for samples greater basixa 30 observations Fonseca and Martins, ; Bussab and Morettin, In this scenario, the present research aimed to determine the sample size for the estimation of biomass and productivity expected values of Canavalia ensiformis and Dolichos lablab.
However, other factors must be analyzed for planning experiments with these green manures, such as seed germination, plant density, spacing to be used and type of harvesting and weeding manual or mechanical.
Estatística Básica, 6ª Ed Morettin e Bussab
It does not fit in this study the judgment of maximum estimation error acceptable, getting the use this information to the researcher for his experimental design.
At maturation, 45 plants were randomly selected in the experimental area of each crop to determine fresh mass, dry mass and productivity. Analyzing the variation coefficient of both green manures verifies a superior magnitude of fresh and dry masses and productivity, suggesting the need of higher sample sizes for the estimation of the fresh and dry mass relative to average productivity.
Conclusions Canavalia ensiformi showed significant higher values for the mean fresh mass production, dry mass and productivity in relation to Dolichos lablabbeing recommended for cultivation in Brazilian Cerrado. According to Teodoro et al. Teodoro 1Larissa P.
Como citar este artigo. Forty five plants were randomly selected in esstatistica experimental area of each crop to determine fresh mass, dry mass and yield. The calculation of central tendency, variability, asymmetry, kurtosis and Lilliefors test relatively to morphological variables fresh mass, dry mass and C.
No base fertilization and coverage for any culture were used. Among the desirable characteristics for selection of species for green manure, stands out mainly dry mass production, because it is related to the capacity to increase nutrient by symbiosis with microorganisms, soil cover and recycling of nutrients Chaves and Calegari, The sample size is directly proportional to the variability of the variables under study and to the desired confidence degree in the estimate and inversely proportional to the estimation error allowed, initially established by the researcher Bar-betta et al.
Embrapa Cerrados, 28 p. From a practical standpoint, it can be inferred that it is difficult to obtain average estimates of the variables evaluated in C.