Statistical Analysis of Variance (ANOVA)

2002 ◽  
Keyword(s):  
Statistical Analysis ◽  
Analysis Of Variance

scholarly journals Characteristics of anteroposterior curvatures of the spine in soccer and futsal players

2017 ◽  
Vol 18 (4) ◽  
Author(s):  
Krystyna Chromik ◽  
Anna Burdukiewicz ◽  
Jadwiga Pietraszewska ◽  
Aleksandra Stachoń ◽  
Paweł Wolański ◽  
...  
Keyword(s):  
College Students ◽  
Statistical Analysis ◽  
Injury Prevention ◽  
Analysis Of Variance ◽  
Statistical Significance ◽  
Body Posture ◽  
Soccer Players ◽  
Prevention Training ◽  
The Difference ◽  
Post Hoc

AbstractPurpose. The aim of the study was to determine differences in anteroposterior spine curvatures between futsal players, soccer players, and non-training students. The results may contribute to the development of present-day knowledge of posturometry, and its implementation in training can help reduce the risk of body posture disorders in athletes. Methods. The examined group consisted of 48 athletes and 38 non-training college students. Body posture parameters were measured with the use of Posturometr-S. The normality of distribution was checked with the Shapiro-Wilk test, and the differences between the groups were measured with ANOVA and the Bonferroni post-hoc test. The level of statistical significance was set at p < 0.05. Results. The analysis of angle values revealed the widest and most similar measurements in the group of futsal players and soccer players. The analysis of variance proved statistically significant differences between the soccer players and futsal players (p = 0.003). The difference between the soccer players and non-training students was statistically significant. The highest γ angular value was measured in non-training students, followed by futsal players and soccer players. The statistical analysis revealed significant differences between the non-training students and futsal players, as well as non-training students and soccer players (p < 0.001). Conclusions. A complex assessment of athletes’ body posture is crucial in injury prevention. Training overloads may often lead to disorders of the organ of locomotion and affect the correct body posture in athletes. This, in turn, may result in pains and injuries.

scholarly journals Fuel and lubricant consumption in felling the young oak-hornbeam stands

2002 ◽  
pp. 59-66
Author(s):  
Vojislav Bajic ◽  
Milorad Danilovic
Keyword(s):  
Statistical Analysis ◽  
Analysis Of Variance ◽  
Unit Area ◽  
Function Form ◽  
Tree Diameter ◽  
Significant Difference ◽  
The Difference ◽  
Level Of Significance ◽  
Average Consumption

Based on the elements of statistical analysis on the dependence of fuel and lubricant consumption on tree diameter, it was assessed that with the increase of tree diameter, the fuel and lubricant consumption in the young oak and hornbeam stands decreases significantly, both in clear felling and in thinning and that the function form Y=exp(a+b x X?1) is the best description of the correlation The consumption of fuel compared to lubricant consumption is almost double, which agrees with the results of the previous studies. Average consumption of fuel and lubricant is 17.43 mL x tree?1, on the plots 20.27 mL x tree?1, average consumption of lubricant per tree on skid roads is 9.4 mL x tree?1, on the plots 11 mL x tree?1. The higher consumption of fuel and lubricant on the plots with selective thinning is the consequence of the longer time needed for the conversion per tree, compared to that in clear felling The consumption of fuel per unit area on the skid roads (clear felling) is 22.9 L x ha?1, on the plots (selective thinning) 7.6 L x ha?1. The consumption of lubricant on the skid roads is 13.3 L x ha?1, on the plots 4.29 L x ha?1. The higher consumption of fuel and lubricant per unit area on the skid roads is due to the difference in the number of trees per unit area Based on the results of the analysis of variance, it was found out that between fuel and lubricant consumption in selective thinning and in felling the trees along tractor skid roads there is no statistically significant difference at the level of significance of 95%. So, for practical purposes, the unique norms of consumption can be established for the stands similar to those in which the study was performed.

scholarly journals EMERGÊNCIA E SOBREVIVÊNCIA DE PLANTAS DE SOJA A CAMPO EM RELAÇÃO ÀS PROFUNDIDADES E ÉPOCAS DE SEMEADURA

2020 ◽  
Vol 35 (2) ◽  
pp. 150-157
Author(s):  
Patrícia Pereira Dias ◽  
Saulo Fernando Gomes de Sousa ◽  
Paulo Roberto Arbex Silva ◽  
Tiago Pereira da Silva Correia ◽  
Anderson Ravanny de Andrade Gomes
Keyword(s):  
Glycine Max ◽  
Statistical Analysis ◽  
Field Experiment ◽  
Analysis Of Variance ◽  
Early Stage ◽  
Soybean Seed ◽  
Sowing Depth ◽  
Tukey Test ◽  
Glycine Max L ◽  
Soil Deposition

A PROFUNDIDADE DE SEMEADURA DA SOJA NA PLANTABILIDADE   PATRÍCIA PEREIRA DIAS1*, SAULO FERNANDO GOMES DE SOUSA2, PAULO ROBERTO ARBEX SILVA3, TIAGO PEREIRA DA SILVA CORREIA4 e ANDERSON RAVANNY DE ANDRADE GOMES5   * Parte do texto foi extraído da tese da autora 1 Departamento de Produção Vegetal, Universidade Estadual Paulista ‘Júlio de Mesquita Filho’ - Av. Universitária, 3780 - Altos do Paraíso, 18610-034, Botucatu - SP, Brasil. [email protected] 2 Agroefetiva, Rua Lourival Ferreira, 11 - Distrito Industrial III, 18608-853, Botucatu - SP, Brasil.  [email protected] 3 Departamento de Engenharia Rural e Socioeconomia, Universidade Estadual Paulista ‘Júlio de Mesquita Filho’ - Av. Universitária, 3780 - Altos do Paraíso, 18610-034, Botucatu - SP, Brasil.  [email protected] 4 Faculdade de Agronomia e Medicina Veterinária, Universidade de Brasília, Caixa - Campos Universitário Darci Ribeiro ICC – Asa Norte, 04508, Brasília - DF, Brasil. [email protected] 5 Faculdade Regional da Bahia, Rodovia AL 220, 3630 - Senador Arnon De Melo - Planalto, Arapiraca – AL, Brasil. [email protected]   RESUMO: O objetivo deste trabalho foi avaliar a cultura da soja semeada a campo em diferentes profundidades das sementes e épocas de semeadura e, dessa maneira, saber o quanto esses fatores influenciam a emergência e sobrevivência das plantas. O experimento foi conduzido em dois anos agrícolas, 2015/16 e 2016/17, com sementes de soja cultivar 5D634, na Fazenda Lageado, da Faculdade de Ciências Agronômicas – UNESP, Botucatu (SP), Brasil. O delineamento foi de blocos ao acaso em esquema fatorial 6 × 2, com seis tratamentos referentes às profundidades das sementes na mesma linha de semeadura: 0,02, 0,05 e 0,08 m do nível do solo, e combinação e alternância entre eles: 0,02 e 0,05, 0,02 e 0,08, 0,05 e 0,08 m e duas épocas de semeadura: outubro e novembro, com quatro repetições, totalizando 48 parcelas. Para a análise estatística, os dados foram submetidos à análise de variância (ANOVA), utilizando o teste de Tukey a 5% de probabilidade. A perda foi acima de 10% no estande de plantas na semeadura mais profunda (0,08 m), aliada à menor precipitação (outubro/2016), que contribuiu significativamente para esse resultado. Desta forma, a plantabilidade é prejudicada com o erro da profundidade de semeadura, aqui representada pela emergência e sobrevivência de plantas.   Palavras-chave: Glycine max L., Plantabilidade, Estande de plantas.   THE SOYBEAN SOWING DEPTH IN PLANTABILITY   ABSTRACT: The aim of this work was evaluate the sowing of soybean seed with error in soil deposition and different month of sowing. The field experiment was carried out during two years (2015 and 2016) at Fazenda Lageado, Faculty of Agronomic Sciences - UNESP / Botucatu - SP, Brazil. The plots were randomized blocks in 6 × 2 factorial, six treatments referring to the depth of the seeds in soil: 0.02 (T1); 0.05 (T2 - control) and 0.08 (T3); 0.02 and 0.05 (T4); 0.02 and 0.08 (T5); 0.05 and 0.08 m (T6) and two sowing times: October and November. For statistical analysis the data were submitted to analysis of variance (ANOVA) using Tukey test at 5% probability. The number of plants in early stage decreased by over 10% in the deep seeding (0.08 m), added to the less rainfall (October / 2016) which contributed significantly to this result. Therefore, plantability is damaged by the error of sowing depth, represented here by the emergence and survival of plants.   Keywords: Glycine max L., Plantability, Early stage.

scholarly journals Selection of Superior Genotypes in 37 Clones of Camu-Camu by Repetitivity Analysis

2017 ◽  
Vol 9 (6) ◽  
pp. 175
Author(s):  
Mario Pinedo Panduro ◽  
Edvan Alves Chagas ◽  
Elvis Paredes Davila ◽  
Carlos Abanto Rodriguez ◽  
Ricardo Bardales Lozano ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Statistical Analysis ◽  
Analysis Of Variance ◽  
Natural Populations ◽  
Reproductive Development ◽  
Fruit Weight ◽  
Peruvian Amazon ◽  
Superior Genotypes ◽  
Selection Of

In order to select camu-camu superior genotypes, a comparative of clones from natural populations, farmer plantations and an experimental field of the National Institute of Agrarian Innovation (INIA), was established in 2004 in varzea, at the Peruvian Amazon Research Institute (IIAP). Nine harvests between 2006 and 2016 have been evaluated, including variables in vegetative and reproductive development states. Statistical analysis was performed using the SPSS program for analysis of variance and SELEGEN REML/BLUP for repetitivity analysis of “fruit yield” (FY) and “fruit weight” (FW) with 5 and 4 measurements (years) respectively. For FY, a repetitivity index r = 0.117±0.07 was obtained with a selective precision of 0.63 and efficiency of 1.84 where clones 69, 48, 58, 50, 61, 13, 18, 29, 49 and 32, were selected in descending order of merit. For FW, r = 0.690±0.294 was obtained with selective precision of 0.948, efficiency of 1.14 and selection of clones 44, 13, 26, 23, 69, 64 22, 52, 27 and 8. As for the content in ascorbic acid, clones 48, 32 and 35 occupied the first places with more than 2000 mg of ascorbic acid/100 g. The selections achieved strengthened the pre-improvement work by conferring vigour y fiavility of a long term research.

CORRELATION STUDIES OF MILKFAT CONTENT AS MEASURED BY THE MILKO-TESTER, BABCOCK, AND MOJONNIER METHODS1,2

1973 ◽  
Vol 36 (2) ◽  
pp. 92-93 ◽  
Author(s):  
C. W. Shannon ◽  
J. T. Cardwell ◽  
L. C. True
Keyword(s):  
Statistical Analysis ◽  
Correlation Coefficient ◽  
Analysis Of Variance ◽  
Milk Fat ◽  
Raw Milk ◽  
Prediction Equation ◽  
Fat Content ◽  
Correlation Studies ◽  
Milk Samples ◽  
Average Variation

To evaluate some of the methods used to estimate milk-fat content in raw milk, producer's milk samples were tested by the Milko-Tester, Babcock, and Mojonnier methods. One hundred eighty-eight individual producer's raw milk samples were analyzed in duplicate the Mlilko-Tester and Babcock methods. In addition, 34 of these samples were randomly selected and analyzed in duplicate by the Mojonnier method. The correlation coefficient for the 188 samples tested by the Babcock and Milko-Tester methods was 0.95. A prediction equation for calculating Babcock results based on Milko-Tester readings was developed. Statistical analysis of the results of the three methods showed highly significant (P &lt; 01) correlation coefficient between each pair of the methods. An analysis of variance showed no significant differences (P &gt; .05) among the three methods. Average variation between duplicate samples showed results from the Milko-Tester to have the least variation, while those from the Babcock procedure varied the most between duplicate determinations.

The statistical analysis of data from intercropping experiments

1978 ◽  
Vol 91 (3) ◽  
pp. 625-632 ◽  
Author(s):  
S. C. Pearce ◽  
B. Gilliver
Keyword(s):  
Experimental Data ◽  
Statistical Analysis ◽  
Analysis Of Variance ◽  
Calorific Value ◽  
Bivariate Analysis ◽  
Significance Levels

SummaryWhen two species are interplanted the interpretation of experimental data presents statistical difficulties because the yields of the two crops will not in general be independent. It is therefore desirable to have a method that will both allow significance levels to be determined and give full importance to the treatment means of the two crops. It is shown that a bivariate analysis of variance can be carried out with little difficulty and precise tests can be based upon it. If it would be helpful to combine the two crops in any way, e.g. on the basis of calorific value or price, the task is readily accomplished.

Methodology and Application of the Kruskal-Wallis Test

2014 ◽  
Vol 611 ◽  
pp. 115-120 ◽  
Author(s):  
Eva Ostertagová ◽  
Oskar Ostertag ◽  
Jozef Kováč
Keyword(s):  
Statistical Analysis ◽  
Analysis Of Variance ◽  
Random Error ◽  
Nonparametric Test ◽  
Multiple Comparison ◽  
Application Data ◽  
The One

This paper describes the methodology and application of the very popular nonparametric test which is a rank based test named as Kruskal-Wallis. This test is useful as a general nonparametric test for comparing more than two independent samples. It can be used to test whether such samples come from the same distribution. This test is powerful alternative to the one-way analysis of variance. Nonparametric ANOVA has no assumption of normality of random error but the independence of random error is required. If the Kruskal-Wallis statistic is significant, the nonparametric multiple comparison tests are useful methods for further analysis. The statistical analysis of the application data in this paper was performed with software MATLAB.

scholarly journals 999 STATISTICAL ANALYSIS OF DISEASE REACTION DATA USING NONPARAMETRIC METHODS

HortScience ◽  
1994 ◽  
Vol 29 (5) ◽  
pp. 572e-572 ◽  
Author(s):  
Kent M. Eskridge
Keyword(s):  
Statistical Analysis ◽  
Statistical Methods ◽  
Analysis Of Variance ◽  
Plant Disease ◽  
Nonparametric Methods ◽  
Classical Analysis ◽  
Disease Reaction ◽  
Reaction Data ◽  
Nonparametric Statistical Methods ◽  
Nonparametric Statistical

Breeders need powerful and simply understood statistical methods when analyzing disease reaction data. However, many disease reaction experiments result in data which do not adhere to the classical analysis of variance (ANOVA) assumptions of normality, homogeneity variance and a correctly specified model. Nonparametric statistical methods which require fewer assumptions than classical ANOVA, are applied to data from several disease reaction experiments. It is concluded that nonparametric methods are easily understood, can be productively applied to plant disease experiments and many times result in improved chances for detecting differences between treatments.

scholarly journals PEMANFAATAN MANURE HASIL DEGRADASI LARVA LALAT HITAM (Hermetia illucens L) SEBAGAI PENGGANTI TEPUNG IKAN TERHADAP PENAMPILAN AYAM BURAS FASE GROWER

ZOOTEC ◽  
2017 ◽  
Vol 37 (2) ◽  
pp. 395
Author(s):  
Elvis N. Simboh ◽  
H.J. Manangkot ◽  
L.J. Lambey ◽  
L.M.S. Tangkau
Keyword(s):  
Statistical Analysis ◽  
Analysis Of Variance ◽  
Feed Efficiency ◽  
Fish Meal ◽  
Average Daily Gain ◽  
Feed Consumption ◽  
Hermetia Illucens ◽  
Black Fly ◽  
Randomized Design ◽  
Daily Gain

UTILIZATION MANURE DEGRADED USING BLACK FLY LARVAE (Hermetia illucens L) SUBSTITUTING FISH MEAL IN RATION ON LOCAL GROWING CHICKENThe objective of this study was to evaluate the performance of local growing chicken fed ration containing manure flour degraded (MFD) by Larva of black fly (Hermetia illucens L). This experiment was carried out using a complete Randomized Design (RAL), consisted of 4 treatments and five replications in each treatment as follows: R0 = Rations with 15% fish meal + 0% MFD, R1 = 10% fish meal + 5% MFD, R2 = 5%  fish meal + 10% MFD, and R3 = 0% fish meal + 5% MFD. The variables measured were feed consumption, average daily gain and feed efficiency. Statistical analysis was done according to the procedure using analysis of variance. Results obtained in the research showed that treatments did not affected significantly feed consumption, average daily gain and feed efficiency of local grower chicken. Therefore, it can be concluded that MFD can be used as the candidate ingredient replacing fish meal in ration of the local grower chicken.Key words: Manure flour degraded, fish meal, black fly, kampong growing chicken

scholarly journals SOME PROPERTIES OF PHOSPHORIC ACID STABILISED LATERIZED ADOBE BRICKS

2020 ◽  
Vol 32 (3) ◽  
Author(s):  
Adekemi Loretta Ayodele ◽  
Abdulhalim Oshioke Mohammed ◽  
Adeyemi Babayemi Fajobi ◽  
Akindehinde Ayotunde Akindahunsi ◽  
Aderopo Musiliu Olajumoke
Keyword(s):  
Compressive Strength ◽  
Statistical Analysis ◽  
Moisture Content ◽  
Phosphoric Acid ◽  
Analysis Of Variance ◽  
Ambient Air ◽  
Dry Density ◽  
Minimum Requirement ◽  
Curing Period ◽  
Dry Soil

The changes in the compressive strength of laterized bricks produced from stabilised residual tropical laterite (RTL) are reported in this paper. The RTL was stabilised with different percentages (2, 4, 6 and 8%) by weight of dry soil of 1M phosphoric acid (PA). Some geotechnical properties and elemental oxide composition of the RTL were determined. Adobe bricks were produced from the PA stabilised, 5% cement stabilised and unstabilised RTL. Adobe bricks produced from 5% cement stabilised RTL served as the control. The bricks were cured under ambient air condition for 7, 14, 21 and 28 days. The pH, dry density, moisture content and compressive strength (fc) of the bricks were determined at the end of each curing period. The influence of PA was evaluated using the changes in the fc of the adobe bricks. The effectiveness of PA was also evaluated using a standard minimum requirement. Statistical analysis of the results was done using Analysis of variance. There was about 90 and 200% increase in fc of PA and cement stabilised Adobe bricks, respectively. The fc of 6% PA stabilised and cement stabilised adobe bricks met the minimum requirement. It is concluded that PA has great potential for stabilising Adobe bricks for building.

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