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. 2012 Mar 15;26(2):198–212. doi: 10.1002/bdm.1751

Table 6.

Difficulty structure and fit statistics for the Rasch‐based numeracy scale—Study 2

Difficulty Infit Outfit
Q12 90.5 1.24 .74
CRT1 76.6 .96 .94
CRT3 60.5 .91 .67
Q3 54.2 .84 .80
Q2 30.5 .96 .84
Q1 29.7 1.07 1.27
Q9 17.4 .91 .62
Q8b 14.2 1.07 .98

Note. Higher difficulty scores indicate greater difficulty.