﻿ Table 6.2 Graphical description of facet statistics

Table 6.2 Graphical description of facet statistics

Controlled by Barchart=

One table is produced for each facet. Each entry in the table is a bar-chart reflecting the distribution of the reported statistics. The scale is from left to right, with range such that all facets have the same scale for each statistic. "M" represents the mean value of the statistic for the facet, "S" is one sample standard deviation each side of the mean, "Q" is two sample standard deviations, and "X" is three.

Frequencies above 9 are reported vertically. 10 is printed as

1

0

Ratings of Scientists (Psychometric Methods p.282 Guilford 1954)

Table 6.2  Junior Scientists Facet Summary.

Logit:

1   1       1      1             1     1       1

+-----Q----------------S----------------M----------------S----------------Q-----+

-1                                       0                                       1

S.E.:

61

+------------QMQ----------------------------------------------------------------+

0                                                                               1

Infit MnSq:

1             1   1     1          1      1                         1

+-----------------S--------------------M+------------------S--------------------Q

0                                       1                                       2

Outfit MnSq:

1              1      1 1               1     1                      1

+------------------S--------------------M--------------------S------------------+

0                                       1                                       2

Infit ZStd:

1                    1   1    1       1   1             1

+---Q-----+---------+S--------+------M--+---------+---S-----+---------Q

-4        -3        -2        -1         0         1         2         3

Outfit ZStd:

1                    1     1 1          1  1            1

+----Q----+---------+S--------+-------M-+---------+----S----+---------+

-4        -3        -2        -1         0         1         2         3

Count:

7

+---------------------------------------M---------------------------------------+

14                                     15                                      16

Raw:

1  1      1     1           1    1      1

+---+--+S-+--+--+--+--+M-+--+--+--+--S--+--+--+---+

50 54 57 60 63 66 69 72 75 78 81 84 87 90 93 96 100

Average:

1   1        1       1               1      1        1

+-----------------S-+----------------M--+---------------S---+--------------Q----+

3                   4                   5                   6                   7

Fair:

1   1         1       1               1      1         1

+----------------S--+----------------M--+---------------S---+---------------Q---+

3                   4                   5                   6                   7

PtMea:

1  1       1       1        1                       1  1

+---------------S--------------------M-------------------S--------------------Q-+

0                                                                               1

 Definitions of numeric bar-charts: Logit: Logit (or user-scaled) measures of elements S.E. Standard errors of the measures  (Barchart=All) Infit MnSq: Infit, information-weighted, inlier pattern sensitive, mean-square fit statistics Outfit MnSq: Outfit, outlier sensitive, mean-square fit statistics Infit Zstd: Standardized, approximately N(0,1), infit statistic Outfit Zstd: Standardized, approximately N(0,1), outfit statistic Count: Number of observations of the elements (Barchart=All). Total observations for all estimable elements. Raw: Raw scores of the elements (Barchart=All) Average: Average observations = Raw / Count (Barchart=All) Fair: Fair-values of the average observations (Barchart=All) PtMea: Point-measure or point-biserial correlations of the elements (Barchart=All, Ptbiserial=)

Help for Facets Rasch Measurement Software: www.winsteps.com Author: John Michael Linacre.

 Forum Rasch Measurement Forum to discuss any Rasch-related topic

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
in Spanish: Análisis de Rasch para todos, Agustín Tristán Mediciones, Posicionamientos y Diagnósticos Competitivos, Juan Ramón Oreja Rodríguez
Winsteps Tutorials Facets Tutorials Rasch Discussion Groups

Coming Rasch-related Events
Jan. 5 - Feb. 2, 2018, Fri.-Fri. On-line workshop: Practical Rasch Measurement - Core Topics (E. Smith, Winsteps), www.statistics.com
Jan. 10-16, 2018, Wed.-Tues. In-person workshop: Advanced Course in Rasch Measurement Theory and the application of RUMM2030, Perth, Australia (D. Andrich), Announcement
Jan. 17-19, 2018, Wed.-Fri. Rasch Conference: Seventh International Conference on Probabilistic Models for Measurement, Matilda Bay Club, Perth, Australia, Website
Jan. 22-24, 2018, Mon-Wed. In-person workshop: Rasch Measurement for Everybody en español (A. Tristan, Winsteps), San Luis Potosi, Mexico. www.ieia.com.mx
April 10-12, 2018, Tues.-Thurs. Rasch Conference: IOMW, New York, NY, www.iomw.org
April 13-17, 2018, Fri.-Tues. AERA, New York, NY, www.aera.net
May 22 - 24, 2018, Tues.-Thur. EALTA 2018 pre-conference workshop (Introduction to Rasch measurement using WINSTEPS and FACETS, Thomas Eckes & Frank Weiss-Motz), https://ealta2018.testdaf.de
May 25 - June 22, 2018, Fri.-Fri. On-line workshop: Practical Rasch Measurement - Core Topics (E. Smith, Winsteps), www.statistics.com
June 27 - 29, 2018, Wed.-Fri. Measurement at the Crossroads: History, philosophy and sociology of measurement, Paris, France., https://measurement2018.sciencesconf.org
June 29 - July 27, 2018, Fri.-Fri. On-line workshop: Practical Rasch Measurement - Further Topics (E. Smith, Winsteps), www.statistics.com
July 25 - July 27, 2018, Wed.-Fri. Pacific-Rim Objective Measurement Symposium (PROMS), (Preconference workshops July 23-24, 2018) Fudan University, Shanghai, China "Applying Rasch Measurement in Language Assessment and across the Human Sciences" www.promsociety.org
Aug. 10 - Sept. 7, 2018, Fri.-Fri. On-line workshop: Many-Facet Rasch Measurement (E. Smith, Facets), www.statistics.com
Sept. 3 - 6, 2018, Mon.-Thurs. IMEKO World Congress, Belfast, Northern Ireland www.imeko2018.org
Oct. 12 - Nov. 9, 2018, Fri.-Fri. On-line workshop: Practical Rasch Measurement - Core Topics (E. Smith, Winsteps), www.statistics.com

Our current URL is www.winsteps.com