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Question: How do you rate the usefulness of the following strategies for understanding and memorising the text? - I concentrate on the parts of the text that are easy to understand.
Choices: 1 "Not useful at all" - 6 "Very useful"
Data: Average score
Period:
Area:
10 countries/ areas
Highlight:
2 Japan3.57
3 United States3.42
5 Canada3.24
6 United Kingdom 3.13
7 France3.04
9 Germany2.97
10 Italy2.87

Note
The data of Azerbaijan are collected only in Baku. The data of China are collected only in Beijing, Shanghai, Jiangsu, and Zhejiang.

Source
OECD PISA 2018 Compendia

Correlations with major national performance indices
Life satisfaction (10 steps)
No. of data7
Regression equation
Y = -0.295747 X +7.523
Correlation coefficient (r)-0.254
Coefficient of determination (R2)0.065

GDP per capita (current US$)
No. of data7
Regression equation
Y = 13726.164029 X +7124.159
Correlation coefficient (r)0.222
Coefficient of determination (R2)0.049

Life expectancy at birth - Both sexes (years)
No. of data7
Regression equation
Y = -1.104306 X +85.023
Correlation coefficient (r)-0.131
Coefficient of determination (R2)0.017

Fertility rate, total (births per woman)
No. of data7
Regression equation
Y = -0.049566 X +1.632
Correlation coefficient (r)-0.059
Coefficient of determination (R2)0.003

Suicide, age-standardized (per 100 000 population)
No. of data7
Regression equation
Y = 11.427724 X -26.848
Correlation coefficient (r)0.847
Coefficient of determination (R2)0.717