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Title: Evolution study of related characteristics of a population from the point of view of design Authors:  Juan M Rodriguez-Diaz - University of Salamanca, CIF Q3718001E (Spain) [presenting]
Rosa Eva Pruneda - University of Castilla-La Mancha (Spain)
Maria Mercedes Rodriguez-Hernandez - University of Salamanca (Spain)
Abstract: The evolution of characteristics from a population that may be correlated will be studied from the point of view of design. Depending on the type of the observations, the corresponding tests needed for the follow-up of the variables could be expensive or time-demanding. Thus, the aim is usually to decide the most convenient moments where a limited number of tests should be done to obtain the maximum information. Using an optimal design of experiments approach, a general method for selection of the best temporal points will be developed. An application to the study of two variables related to the capacity of resolution of mathematical problems for primary-school students will be shown, employing different evolution models.