Table heading

At the top of each output Table is basic information about the analysis:

 

TABLE 1.0 LIKING FOR SCIENCE (Wright & Masters p. ZOU214ws.txt Feb  1 14:38 2005

INPUT: 75 KIDS, 25 ACTS  REPORTED: 75 KIDS, 25 ACTS, 3 CATS      WINSTEPS 3.93.0

--------------------------------------------------------------------------------

 

TABLE 1.0 is identifies the current Table and sub-table.

 

LIKING FOR SCIENCE (Wright & Masters is set by TITLE=

 

ZOU214ws.txt is the name of the disk file containing this Table.

 

Feb  1 14:38 2005 is the date and time of this analysis.

 

INPUT: 75 KIDS, 25 ACTS

75 KIDS gives the number of cases in the data file(s) and the case (row) identification PERSON=

25 ACTS gives the number of items specified by NI= and the column (item) identification ITEM=

 

REPORTED: 75 KIDS

shows how many rows, cases, persons, subjects, objects are currently active for reporting (PDELETE=, PDFILE=, PSELECT=)

25 ACTS

shows how many columns, items, agents are currently active for reporting (IDELETE=, IDFILE=, ISELECT=).

3 CATS

shows how many categories are currently active for reporting.. The number of categories is determined by the ISGROUPS= item groups and the data structure as screened by CODES=. etc. For details of the categories, see Table 3.2

3 CATS indicates that the Rating Scale Model is being used.

6 CATS  indicates that the items are analyzed as two groups of items. Each groups has a rating scale with 3 categories.

75 CATS indicates that each of the 25 items is analyzed with 3 categories, the Partial Credit Model.

Item Grouping (Rating Scale Model, Grouped Rating Scale Model, Partial Credit Model) is flagged by the extreme right-hand column "G" in item Table 10.1, etc.

 

In previous versions of Winsteps,  ANALYZED was used to mean "used for item analysis", omitting extreme scores.


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Rasch Publications
Rasch Measurement Transactions (free, online) Rasch Measurement research papers (free, online) Probabilistic Models for Some Intelligence and Attainment Tests, Georg Rasch Applying the Rasch Model 3rd. Ed., Bond & Fox Best Test Design, Wright & Stone
Rating Scale Analysis, Wright & Masters Introduction to Rasch Measurement, E. Smith & R. Smith Introduction to Many-Facet Rasch Measurement, Thomas Eckes Invariant Measurement with Raters and Rating Scales: Rasch Models for Rater-Mediated Assessments, George Engelhard, Jr. & Stefanie Wind Statistical Analyses for Language Testers, Rita Green
Rasch Models: Foundations, Recent Developments, and Applications, Fischer & Molenaar Journal of Applied Measurement Rasch models for measurement, David Andrich Constructing Measures, Mark Wilson Rasch Analysis in the Human Sciences, Boone, Stave, Yale
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