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Table 7 Differences between average p-values for NF items and F items in TIMSS Advanced 2015 physics

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

Country Difference NF–F, physics (%)
Norway 7.67
Sweden 3.82
USA 5.86
Russia − .21
France 14.04
Slovenia − 4.70
Portugal 3.18