Woodcut.txt: 3 facet Poisson count: Woodcutting |
This is for 32-bit Facets 3.87. Here is Help for 64-bit Facets 4
Four teams of woodcutters were timed cutting three types of log, with and without bark. One way of modeling these data is as Poisson counts of tenths of seconds. The better teams take less time.
Facets specifications and data (in file Woodcut.txt):
title = Woodcutting Experiment (David Wallace)
facets = 3 ; trees, bark, teams
arrange = N,3f ; "N": output tables of measures arranging all facets by element number
; "3f": also arrange facet 3, teams, by fit
positive = 1,2 ; higher time, harder to cut. Lower time, better team - facet 3
noncenter=3 ; non-center the teams
vertical=1A,2A,3N ; elements reported on vertical rulers by alphabetical name, where known
model=?B,?B,?,Chops ; time to cut through log in 10ths seconds. Bias interactions between trees and bark.
*
rating scale=Chops,P ; model as Poisson counts with estimated step difficulty
*
Labels =
1,Tree
1=Spruce ; 3 types of log
2=Pine
3=Larch
*
2,Bark
1,Without bark ; each log, with and without bark
2,With bark
*
3,Wood cutting team
1-4= ; names of 4 teams unknown
*
Data =
1,1,1,64 ; the spruce without bark was cut by team 1 in 6.4 seconds
| ; 22 more data points
3,2,4,61 ; the larch with bark was cut by team 4 in 6.1 seconds
Poisson scales imply an infinite number of categories, 0,1,2,3,..., but with a known relationship. Facets reports the degree to which the data meets this categorization:
Help for Facets Rasch Measurement and Rasch Analysis Software: www.winsteps.com Author: John Michael Linacre.
Facets Rasch measurement software.
Buy for $149. & site licenses.
Freeware student/evaluation Minifac download Winsteps Rasch measurement software. Buy for $149. & site licenses. Freeware student/evaluation Ministep download |
---|
Forum: | Rasch Measurement Forum to discuss any Rasch-related topic |
---|
Questions, Suggestions? Want to update Winsteps or Facets? Please email Mike Linacre, author of Winsteps mike@winsteps.com |
---|
State-of-the-art : single-user and site licenses : free student/evaluation versions : download immediately : instructional PDFs : user forum : assistance by email : bugs fixed fast : free update eligibility : backwards compatible : money back if not satisfied Rasch, Winsteps, Facets online Tutorials |
---|
Coming Rasch-related Events | |
---|---|
May 17 - June 21, 2024, Fri.-Fri. | On-line workshop: Rasch Measurement - Core Topics (E. Smith, Winsteps), www.statistics.com |
June 12 - 14, 2024, Wed.-Fri. | 1st Scandinavian Applied Measurement Conference, Kristianstad University, Kristianstad, Sweden http://www.hkr.se/samc2024 |
June 21 - July 19, 2024, Fri.-Fri. | On-line workshop: Rasch Measurement - Further Topics (E. Smith, Winsteps), www.statistics.com |
Aug. 5 - Aug. 7, 2024, Mon.-Wed. | 2024 Inaugural Conference of the Society for the Study of Measurement (Berkeley, CA), Call for Proposals |
Aug. 9 - Sept. 6, 2024, Fri.-Fri. | On-line workshop: Many-Facet Rasch Measurement (E. Smith, Facets), www.statistics.com |
Oct. 4 - Nov. 8, 2024, Fri.-Fri. | On-line workshop: Rasch Measurement - Core Topics (E. Smith, Winsteps), www.statistics.com |
Jan. 17 - Feb. 21, 2025, Fri.-Fri. | On-line workshop: Rasch Measurement - Core Topics (E. Smith, Winsteps), www.statistics.com |
May 16 - June 20, 2025, Fri.-Fri. | On-line workshop: Rasch Measurement - Core Topics (E. Smith, Winsteps), www.statistics.com |
June 20 - July 18, 2025, Fri.-Fri. | On-line workshop: Rasch Measurement - Further Topics (E. Smith, Facets), www.statistics.com |
Oct. 3 - Nov. 7, 2025, Fri.-Fri. | On-line workshop: Rasch Measurement - Core Topics (E. Smith, Winsteps), www.statistics.com |
Our current URL is www.winsteps.com
Winsteps® is a registered trademark