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Question: How often do these things happen in your mathematics lessons? - Students interrupt the teacher.
Choices: "Every or almost every lesson" "About half the lessons" "Some lessons" "Never"
Data: % of "Every or almost every lesson"
Period:
Area:
8 countries/ areas
Highlight:
1 Australia29.7%
2 United Kingdom24.3%
3 Italy20.9%
3 United States20.9%
5 Sweden19.4%
6 France 16.7%
7 Republic of Korea10.1%
8 Japan2.7%

Note
United Kingdom: England only.

No data for 2 countries.

Source
TIMSS 2019 > International Database > TIMSS 2019 Data Almanacs - Grade 8

Correlations with major national performance indices
Life satisfaction (10 steps)
No. of data8
Regression equation
Y = 3.933296 X +5.904
Correlation coefficient (r)0.723
Coefficient of determination (R2)0.523

GDP per capita (current US$)
No. of data8
Regression equation
Y = 117687.933616 X +26902.320
Correlation coefficient (r)0.612
Coefficient of determination (R2)0.375

Life expectancy at birth - Both sexes (years)
No. of data8
Regression equation
Y = -11.046604 X +84.061
Correlation coefficient (r)-0.362
Coefficient of determination (R2)0.131

Fertility rate, total (births per woman)
No. of data8
Regression equation
Y = 2.187740 X +1.077
Correlation coefficient (r)0.550
Coefficient of determination (R2)0.303

Suicide, age-standardized (per 100 000 population)
No. of data8
Regression equation
Y = -25.966575 X +16.245
Correlation coefficient (r)-0.430
Coefficient of determination (R2)0.185