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

Table 3.

Difficulty structure and fit statistics for the eight‐item numeracy scale—Study 1

Item Difficulty Infit Outfit
Q12 89.0 1.10 .90
CRT1 73.5 .95 .72
CRT3 60.2 .87 .75
Q3 57.9 .84 .76
Q2 39.6 1.24 1.61
Q1 29.8 .90 .77
Q9 26.2 1.02 1.16
Q8b 15.2 1.05 .79