Exact(8)
Thirteen test booklets were produced, each composed of four clusters according to a rotated design.
The plausible values are the result of the rotated design and Item Response Theory methodology.
The digital reading test was computer-based, also with a rotated design of clusters.
In the 2003 PISA round all students were tested in mathematics and due to the rotated design about half were tested in reading, science or problem solving (OECD 2004, p. 336).
This first experimental design was followed by another one (central composite rotated design) where the buffer volume was changed from 13.79 to 56.21 mL, and the extraction time was changed from 5.86 to 34.14 min (Table 4).
Due to the low sugar content of acerola, external sugars (sucrose, glucose and fructose) were added to the juice and the oligosaccharides synthesis was carried out using a central composite rotated design.
Similar(52)
The second row for each country in Table 14 sets out the differences in the form of ratios between the original correlation and the correlation estimate based on the five rotated designs.
Furthermore, because the main aim of this paper is to examine the possible implications of a rotated questionnaire design for the proficiency estimates rather than search for the optimal questionnaire rotation design, we elected to use the two-form design.
Both pertained to Colombia and both related to Rotation Design 2, where the correlation between the constructs and performance was higher in one of the rotated forms than in the other form.
All of these differences were associated with Rotation Design 2, which means that the correlations between the variable set and performance in one of the rotated forms were consistently higher than the correlations in the other rotated form.
20 booklets with one or two blocks in each booklet were used in a rotated booklet design to mimic a balanced incomplete block design (see e.g., Frey et al. [2009]; Gonzalez & Rutkowski [2010]).
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