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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:
1 Republic of Korea3.67
2 Japan3.57
3 United States3.42
4 Australia3.32
5 Canada3.24
6 United Kingdom3.13
7 France 3.04
8 Sweden3.02
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 data10
Regression equation
Y = -0.711629 X +8.950
Correlation coefficient (r)-0.460
Coefficient of determination (R2)0.212

GDP per capita (current US$)
No. of data10
Regression equation
Y = -358.432842 X +50086.546
Correlation coefficient (r)-0.007
Coefficient of determination (R2)0.000

Life expectancy at birth - Both sexes (years)
No. of data10
Regression equation
Y = 0.522906 X +80.314
Correlation coefficient (r)0.061
Coefficient of determination (R2)0.004

Fertility rate, total (births per woman)
No. of data10
Regression equation
Y = -0.562163 X +3.292
Correlation coefficient (r)-0.505
Coefficient of determination (R2)0.255

Suicide, age-standardized (per 100 000 population)
No. of data10
Regression equation
Y = 14.159994 X -34.566
Correlation coefficient (r)0.822
Coefficient of determination (R2)0.676