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Table 4 Classification of TIMSS Advanced items using the F/NF dichotomy, in percentages of items

From: The dependence on mathematical theory in TIMSS, PISA and TIMSS Advanced test items and its relation to student achievement

  TA 2015 mathematics (%) TA 2015 physics (%)
Classified as F [using formula(s)] by at least 3 of 4 scorers 67.0 31.1
Opinions divided (2-2) 8.7 7.8
Classified as NF [not using formula(s)] by at least 3 of 4 scorers 24.3 61.1