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In this paper, we explore high school students' response patterns to matched pairs of multiple-choice items about natural selection, varying item context through the use of plants or animals in the item stems.
Inspection of the estimated item parameters showed varying item discriminations across the items (Table 5, column 5 for females and column 9 for males).
The two parameter model estimates the examinees performance or ability on a latent trait with varying item difficulty and discrimination using dichotomous responses.
Costs (IFs and PNHs in Tokyo): Cost for land acquisition is the most regionally varying item in the initial capital costs.
The use of these models might result in better fit of the data, as they consider varying item difficulty curves, varying homogeneity or monotonicity of the data, or multiple latent classes within the sample populations.
A model with variable sensitivity and specificity of the diagnostic tests (varying item response probabilities) over time was not supported by the data in The Gambia (Web Table 1), although this may be the result of low power given the low infection prevalence after treatment in this community.
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The app is a little raw right now – there were some bugs in my testing – but the guys have a great head start on other shopping sites and I love the idea of a universal shopping bag full of varying items from many emporiums across the web.
Bring water bottle and daily folder into the classroom with varying items: milk/lunch money, homework, school forms, etc. Sort said folder items in particular baskets and boxes in the classroom.
This assumption is unrealistic for the EDS, as shown by the varying item-factor loadings in the factor analysis and the varying scalability coefficients in Mokken scale analysis.
Other studies, however, did report low reliably for varying items of the FIQ [ 12, 14, 16].
The survey data originate from six questionnaires with recurring and varying items and themes (Table 1).
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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com