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Question: How do you rate the usefulness of the following strategies for understanding and memorising the text? - I quickly read through the text twice.
Choices: 1 "Not useful at all" - 6 "Very useful"
Data: Average score
Period:
Area:
10 countries/ areas
Highlight:
1 Republic of Korea3.43
2 Australia3.12
3 United Kingdom3.09
4 Canada3.04
4 United States3.04
6 Germany2.66
7 Sweden2.64
8 Japan 2.54
9 France2.50
10 Italy2.35

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 = -0.019799 X +6.822
Correlation coefficient (r)-0.014
Coefficient of determination (R2)0.000

GDP per capita (current US$)
No. of data10
Regression equation
Y = 7638.224066 X +28033.105
Correlation coefficient (r)0.225
Coefficient of determination (R2)0.051

Life expectancy at birth - Both sexes (years)
No. of data10
Regression equation
Y = -0.909676 X +84.474
Correlation coefficient (r)-0.160
Coefficient of determination (R2)0.026

Fertility rate, total (births per woman)
No. of data10
Regression equation
Y = -0.292358 X +2.293
Correlation coefficient (r)-0.367
Coefficient of determination (R2)0.135

Suicide - all ages (per 100,000 population)
No. of data10
Regression equation
Y = 9.263538 X -12.348
Correlation coefficient (r)0.540
Coefficient of determination (R2)0.292