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Analysis of frequency data: The ANOFA framework [PDF]

open access: yesTutorials in Quantitative Methods for Psychology, 2023
Analyses of frequencies are commonly done using a chi-square test. This test, derived from a normal approximation, is deemed generally efficient (controlling type-I error rates fairly well and having good statistical power).
Laurencelle, Louis, Cousineau, Denis
doaj   +1 more source

Factorial design and statistical analysis of smectite clay treatment by hydrocyclone [PDF]

open access: yesCerâmica, 2018
Abstract Bentonite clays are materials composed by one or more smectite clay minerals and some accessory minerals, mainly quartz, cristobalite, mica, feldspars and other clay minerals such as kaolinite. These contaminants present in clays have a large distribution of particle sizes which severely restrict their industrial applications, with the use of ...
Gama, A. J. A.   +5 more
openaire   +4 more sources

NRC Designs—New Tools for Successful Agricultural Experiments

open access: yesAgronomy, 2021
In a nested row–column design (NRC), the experimental units in each of n blocks are grouped into n1 rows and n2 columns. Due to its structure, this experimental design allows full control of the experimental material and a relatively simple feedback loop
Agnieszka Łacka
doaj   +1 more source

Nested row-column designs for near-factorial experiments with two treatment factors and one control treatment [PDF]

open access: yes, 2015
The authors also thank Queen Mary, University of London, the University of St Andrews and the Poznan University of Life Sciences for financial support. The second author was also supported by the British-Polish Young Scientists Programme, grant WAR/342 ...
Bailey, Rosemary Anne   +3 more
core   +1 more source

D-Optimal Designs for Binary and Weighted Linear Regression Models: One Design Variable

open access: yesMathematics, 2023
D-optimality is a well-known concept in experimental design that seeks to select an optimal set of design points to estimate the unknown parameters of a statistical model with a minimum variance.
Necla Gündüz, Bernard Torsney
doaj   +1 more source

Design and Analysis of Fractional Factorial Experiments From the Viewpoint of Computational Algebraic Statistics [PDF]

open access: yesJournal of Statistical Theory and Practice, 2012
We give an expository review of applications of computational algebraic statistics to design and analysis of fractional factorial experiments based on our recent works. For the purpose of design, the techniques of Gröbner bases and indicator functions allow us to treat fractional factorial designs without distinction between regular designs and non ...
Aoki, Satoshi, Takemura, Akimichi
openaire   +2 more sources

Improvement of lipase production from Geotrichum sp. in shaken flasks [PDF]

open access: yesChemical Industry and Chemical Engineering Quarterly, 2012
This work is focused on the study of different variables on inoculum build-up aiming to improve the lipase production by Geotrichum sp. by means a sequential strategy of experimental design.
Maldonadoa Resende Rafael   +5 more
doaj   +1 more source

Statistical Based Bioprocess Design for Improved Production of Amylase from Halophilic Bacillus sp. H7 Isolated from Marine Water

open access: yesMolecules, 2021
Amylase (EC 3.2.1.1) enzyme has gained tremendous demand in various industries, including wastewater treatment, bioremediation and nano-biotechnology. This compels the availability of enzyme in greater yields that can be achieved by employing potential ...
J. N. Bandal   +6 more
doaj   +1 more source

Statistical Optimization of Urinary Organic Acids Analysis by a Multi-Factorial Design of Experiment [PDF]

open access: yesAnalytica, 2020
The analysis of urinary organic acids is useful for patients suspected to have inborn errors of metabolism known as organic acidurias. These diseases cause an accumulation of organic acids in body fluids and their abnormal excretion in urines. By means of chemometrics tools, such as principal component analysis and multiple linear regression, it was ...
Pazzi, Marco   +5 more
openaire   +2 more sources

Advances in Breeding for Mixed Cropping – Incomplete Factorials and the Producer/Associate Concept

open access: yesFrontiers in Plant Science, 2021
Mixed cropping has been suggested as a resource-efficient approach to meet high produce demands while maintaining biodiversity and minimizing environmental impact.
Benedikt Haug   +9 more
doaj   +1 more source

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