10.07.2015 Views

ICCS 2009 Technical Report - IEA

ICCS 2009 Technical Report - IEA

ICCS 2009 Technical Report - IEA

SHOW MORE
SHOW LESS
  • No tags were found...

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

Table 11.5: Example of item statistics provided to national centers-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------<strong>ICCS</strong> <strong>2009</strong> MS - Item Statistics for Country: CNT Target Grade-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------How to read the item names: | Other abbreviations:|/--------------- Subject: C = Civic and Citizenship Education | ITEM Name of the item| /------------- Internationally administered item | N Number of valid cases| | /----------- Item developed for: 1 = CivEd 1999, 2 = <strong>ICCS</strong> <strong>2009</strong> | DIFF Item difficulty| | | /-------- Item unit: Unique identifier of unit | DISCR Item discrimination| | | | /------ Item type: M = Multiple-choice item, C = Constructed item, | Percentages| | | | | O = Open-ended item | 0,1,2,3,4,5 % of students choosing different answer options| | | | | /---- Number of item within unit | NR % of students not reaching the item| | | | | | | OM (for MC) % of students omitting the item| | | | | | | INV % of students which gave invalid answerC I 2 07 M 2 | OM (for CR) % of students omitting or answering the item incorrectly| Point bi-serial correlations| 0,1,2,3,4,5 Corr. for students choosing different answer options| International| Rasch results| EST Rasch item difficulty| ERR Rasch standard error of item difficulty| STPx Step difficulty| FIT Rasch mean square fit index| GIRL Item difficulty difference to female| BOY Item difficulty difference to male| EST International Rasch difficulty| PB International point-biserial corr. for correct distractorCountries in International Statistics: | DIFF International item difficultyAUT BFL BGR CHE CHL COL CYP ENG ESP FIN GRC GTM HKG IRL ITA KOR LIE LTU MEX NOR NZL POL RUS SVK SVN SWE THA TWN-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------Percentages Point bi-serial correlations InternationalITEM N DIFF DISCR| 0 1 2 3 4 OM NR INV | 0 1 2 3 4 OM | EST ERR STP1 STP2 STP3 FIT GIRL BOY | EST PB DIFF-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------1 CI101M1 1469 78.4 0.5 | 10.8 78.4* 6.1 3.8 0.8 0.1 | . -0.33 0.52* -0.30 -0.15 -0.10 | -1.03 0.03 . . . 0.72 0.06 -0.06 | -0.48 0.39 68.972 CI104M1 1468 69.8 0.4 | 5.5 16.8 7.2 69.8* 0.3 0.1 0.4 | . -0.32 -0.18 -0.21 0.44* -0.05 | -0.50 0.03 . . . 0.99 0.13 -0.13 | -0.06 0.39 61.613 CI106M1 1465 73.3 0.5 | 8.9 12.6 73.3* 3.8 0.9 0.3 0.5 | . -0.32 -0.29 0.53* -0.19 -0.06 | -0.70 0.03 . . . 0.79 0.04 -0.04 | -0.64 0.48 72.634 CI108M1 1469 49.1 0.3 | 12.1 8.6 49.1* 28.1 1.5 0.8 | . -0.19 -0.23 0.30* 0.00 -0.12 | 0.56 0.03 . . . 1.14 0.13 -0.13 | 0.15 0.34 58.265 CI109M1 1469 70.1 0.5 | 6.5 10.1 11.8 70.1* 1.2 0.3 | . -0.22 -0.30 -0.26 0.54* -0.14 | -0.52 0.03 . . . 0.85 -0.12 0.12 | -0.13 0.43 63.616 CI110M1 1469 58.5 0.5 | 8.9 14.4 16.6 58.5* 1.3 0.4 | . -0.17 -0.34 -0.17 0.50* -0.09 | 0.10 0.03 . . . 0.95 0.19 -0.19 | 0.38 0.46 53.167 CI113M1 1468 74.8 0.5 | 7.9 74.8* 7.3 8.8 0.8 0.1 0.4 | . -0.27 0.47* -0.25 -0.20 -0.08 | -0.79 0.03 . . . 0.89 -0.09 0.09 | -0.04 0.41 61.738 CI115M1 1468 51.4 0.5 | 20.2 51.4* 15.4 11.8 0.7 0.1 0.5 | . -0.13 0.45* -0.30 -0.17 -0.06 | 0.45 0.03 . . . 1.01 0.07 -0.07 | 0.77 0.41 45.409 CI119M1 1468 57.0 0.6 | 31.5 5.0 57.0* 5.3 0.3 0.1 0.8 | . -0.40 -0.23 0.60* -0.21 -0.09 | 0.17 0.03 . . . 0.80 0.04 -0.04 | 0.05 0.47 60.4310 CI120M1 1467 57.9 0.4 | 30.1 5.9 57.9* 4.4 0.5 0.1 1.4 | . -0.17 -0.18 0.36* -0.21 -0.04 | 0.13 0.03 . . . 1.10 -0.08 0.08 | -0.83 0.37 76.1511 CI121M1 1467 34.9 0.3 | 34.9* 7.2 34.6 22.1 0.9 0.1 0.3 | . 0.31* -0.16 -0.17 -0.03 -0.05 | 1.27 0.03 . . . 1.20 0.31 -0.31 | 0.89 0.34 43.3412 CI127M1 1467 26.8 0.3 | 5.3 28.1 26.8* 37.8 1.7 0.1 0.3 | . -0.23 -0.02 0.26* -0.09 -0.04 | 1.72 0.03 . . . 1.26 0.35 -0.35 | 1.17 0.28 38.0513 CI128M1 1469 64.4 0.6 | 10.8 10.8 12.0 64.4* 1.7 0.4 | . -0.16 -0.37 -0.28 0.57* -0.06 | -0.20 0.03 . . . 0.83 0.01 -0.01 | -0.22 0.47 64.9514 CI129M1 1466 58.7 0.4 | 13.4 13.5 58.7* 12.8 1.2 0.2 0.4 | . -0.16 -0.30 0.44* -0.16 -0.03 | 0.09 0.03 . . . 0.97 0.21 -0.21 | 0.56 0.37 49.9315 CI130M1 1466 47.3 0.4 | 14.2 15.1 20.0 47.3* 3.1 0.2 0.3 | . -0.08 -0.23 -0.23 0.42* -0.01 | 0.65 0.03 . . . 1.06 0.20 -0.20 | -0.27 0.53 66.01SCALING PROCEDURES FOR <strong>ICCS</strong> TEST ITEMS141

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!