scholarly journals Analysis of variance and linear contrasts in experimental design with generalized secant hyperbolic distribution

2008 ◽  
Vol 216 (2) ◽  
pp. 545-553 ◽  
Author(s):  
Yildiz E. Yilmaz ◽  
Aysen D. Akkaya
2015 ◽  
Vol 7 (1) ◽  
pp. 31-44 ◽  
Author(s):  
Hardius Usman

The aims of this study are to examine Muslim’s religious norms regarding to their belief on  the  law  of  the  prohibition  of  bank  interest,  and  to  investigate  the  effect  of religius norms on customers’ decision in using the Islamic banking services. This study employs natural experimental design with Analysis of Variance (ANOVA), and Pearson Chi-Square Test. The exploratory study also conducted to support the quantitative analysis. The results show that the religious norms among Muslims classified into two categories, i.e: traditional and contemporary group and the religious norm of the Muslim have significant affects on the decision in using the Islamic banks.DOI:10.15408/aiq.v7i1.1356


1986 ◽  
Vol 20 (1) ◽  
pp. 46-54 ◽  
Author(s):  
Wayne Hall ◽  
Kevin D. Bird

Methods are presented for using linear contrasts to make inferences about differences between the means of several populations on continuous dependent variables. These methods control the experimentwise error rate (the probability of committing one or more type 1 errors in the set of decisions made within the experiment) for linear contrasts which compare some sub-sets of populations with others. Appropriate methods are outlined for testing contrasts which have been planned (i.e., specified independently of the data on which they are tested) and defined post hoc (i.e., after an inspection of the data). We show how these methods can be adapted to the analysis of data from factorial analysis of variance research designs.


1974 ◽  
Vol 6 (1) ◽  
pp. 31-40 ◽  
Author(s):  
Edmund B. Coleman ◽  
Gerald R. Miller

Recently, several methodological critiques have pointed out that most experiments in verbal learning fail to present statistical evidence that their results could be replicated using a different sample of language materials. Consequently, many of the studies have little scientific point because their conclusions have to be restricted to the specific language items used in the experiment. All these critiques are summarized, the various solutions to the problem are evaluated, and procedures to arrive at the simplest solution are described. This solution should present no difficulties to anyone who has had a course in analysis of variance.


1975 ◽  
Vol 12 (1) ◽  
pp. 68-72 ◽  
Author(s):  
Mary Lou Roberts ◽  
James R. Taylor

This article reports the finding of a study designed to extend the use of proximity judgments to an experimental design. The analysis mode of multidimensional scaling (MDS) and multivariate analysis of variance (MANOVA) was used to determine the effect of the experimental manipulation on the respondents’ perception of a hypothetical new coffee product relative to seven types of coffee products currently available to consumers.


2016 ◽  
Vol 22 (1) ◽  
pp. 88
Author(s):  
Eder De Oliveira Santos ◽  
Antonio Anderson De Jesus Rodrigues ◽  
Esdras Rocha da Silva ◽  
Ana Cristina Portugal Pinto de Carvalho

The large ornamental potential of tropical flowers has stimulated the commercial cultivation of various species. Micropropagation is a viable alternate method of propagation, since it enables obtaining a higher number of seedlings with uniformity and pathogens free. The objective was to evaluate the in vitro multiplication rate of Etlingera elatior cv. Porcelana, using explants obtained from in vitro established seedling shoots, obtained from the 2nd subcultive. The explants were inoculated in MS culture medium containing different concentrations of BAP (0.0; 2.22; 4.44; 6.66; 8.88; and 11,10 μM), and the cultures maintained in a growth room with temperature 25.0 ± 2.0 °C under a photoperiod of 12 hours of light and light intensity of 30 μmol.m-2 s-1. The multiplication rate was monthly, according to the four subcultives, totaling 120 days. The experimental design was completely randomized, with four replications, analyzed in a factorial 4 x 6. The data were submitted to analysis of variance and regression. There were significant differences in subcultives and made for BAP concentrations used. For the first subcultive, the concentration of 2.22 μM of BAP afforded a rate of 4.06 sprouts per explant, already in the second and fourth subcultives, with the addition of cytokinin concentration was increased amount of sprouts reaching at a rate of 4.05 and 4.96 shoots/explant in the highest concentration of BAP. The results of the treatments evaluated indicate that the presence of BAP favored sprout emission. The concentrations of 2.22, 8.88 and 11.10 μM this cytokinin promoted the highest multiplication rates in the first, second and fourth subcultives, respectively.


2019 ◽  
Vol 6 (1) ◽  
Author(s):  
Eries Kusmiandany ◽  
Yoga Pratama ◽  
Yoyok Budi Pramono

This study aimed to evaluate the effect of the ratio of gatot and red beans usage on water content and organoleptic characteristics from "Gatotkaca" analog rice. The material in this study was gatot (fermented cassava) and red beans. The experimental design used was a completely randomized design (CRD) with 4 treatments and 5 replications. This study consisted of 4 different analog rice formulations, namely T1 (90% gatot: 10% red beans); T2 (85% gatot: 15% red beans); T3 (80% gatot: 20% red beans); T4 (75% gatot: 25% red beans). Data were analysed using Analysis of Variance (ANOVA) with the significance level 5%. The results showed that the difference in the ratio of the usage of gatot but red beans didn’t have a significant effect (p>0.05) on the water content and organoleptic characteristics. Treatment with a ratio of gatot and 85% red beans  15% gatot was the best treatment.


2017 ◽  
Vol 13 (21) ◽  
pp. 238
Author(s):  
Teddy Landívar Ortiz ◽  
Eduardo Colina Navarrete ◽  
Carlos Castro Arteaga ◽  
Danilo Santana Aragoné ◽  
Guillermo García Vásquez ◽  
...  

The research was carried out on the Property “El Cartan” that is located in Km 4 way at Puebloviejo-Ventanas, county of Los Ríos. A test was conducted on the hybrid corn DK-1040. This test measures the response of the larvae of insects Spodoptera frugiperda and Elasmopalpus lignosellus to the application of dose of biological and organic insecticides. Also, the most appropriate dose in products was determined with an economic analysis. The experimental design used was random complete blocks with seven treatments and three replicates. The variables evaluated are: percentage of larvae control, number of larvae per plant, corn damage, and yield for hectare. The evaluated variables were subjected to the analysis of variance, and Tukey test was applied to 95 % probability. The analyzed results were determined to apply Neem (Azadirachtina indica) in dose of 1,0 L ha -1 . It diminishes the populations of S. frugiperda and E. lignosellus in relationship to the other active matters applied in the test. Higher doses lead to migration of pests to nearby hosts. The highest yield per hectare was found in the Neem 1.0 L ha-1 treatment with 8,940 kg ha-1.


2006 ◽  
Vol 12 (2) ◽  
pp. 199
Author(s):  
Octavio Cano ◽  
Oscar Hugo Tosquy ◽  
Mauro Sierra ◽  
Flavio Antonio Rodríguez

During the rainy season in 1998/98 a reseach was conducted in Campo Experimental Cotaxtla, Veracruz, México, with the objectives of knowing the response of five corn genotypes to doses fertilizer and plant density. A completed randomized block experimental design with two replications was used arranged in split plots where the genotypes (G) VS-536, H-512, H-513, HTV1 and HTV2 were considered as small plots ; The medium plots were doses of fertilization (F) of N2,P2O5,K2O: 161-46-0, 184-69-0, 184-69-30, 207-92-0 and 207-92-30 ; and the big plots were plant densities(D): 50, 62.5, 75, 93.75, 100 and 125 thousand plants/hectare. The characteristics studied were: harvest index, ears per plant, and grain yield. The analysis of variance showed significant differences for some characteristics in D, F, DxF y DxG and for all in G. According to this, the best genotype was the experimental hybrid HTV1 with yield 6.74 t/ha. The response to fertilization was only of to harvest index, where the best dose was 184-69-0. In relation with plant density, with 62500 plants/hectare, all genotypes showed their best yield and number of ears per plant.


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