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Question: How do you rate the usefulness of the following strategies for understanding and memorising the text? - I underline important parts of the text.
Choices: 1 "Not useful at all" - 6 "Very useful"
Data: Average score
Period:
Area:
38 countries/ areas
Highlight:
1 Republic of Korea4.56
2 Portugal4.50
3 Japan 4.46
4 Turkiye4.42
5 Spain4.40
6 Greece4.39
7 Mexico4.37
8 Italy4.35
8 United Kingdom4.35
10 Ireland4.25
11 Germany4.23
12 Costa Rica4.22
13 Chile4.16
14 Switzerland4.15
15 France4.10
16 Hungary4.07
17 Estonia4.05
18 United States4.01
19 Slovenia4.00
20 Poland3.99
21 Australia3.95
21 Austria3.95
23 Luxembourg3.92
24 New Zealand3.88
25 Finland3.79
25 Latvia3.79
27 Belgium3.78
27 Israel3.78
29 Canada3.74
29 Denmark3.74
31 Lithuania3.70
32 Sweden3.68
33 Colombia3.63
34 Czech Republic3.52
35 Netherlands3.51
36 Iceland3.44
37 Slovakia3.41
38 Norway3.35

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 data38
Regression equation
Y = -1.009176 X +10.734
Correlation coefficient (r)-0.514
Coefficient of determination (R2)0.264

GDP per capita (current US$)
No. of data38
Regression equation
Y = -20225.187437 X +124988.294
Correlation coefficient (r)-0.238
Coefficient of determination (R2)0.057

Life expectancy at birth - Both sexes (years)
No. of data38
Regression equation
Y = 0.938818 X +76.681
Correlation coefficient (r)0.118
Coefficient of determination (R2)0.014

Fertility rate, total (births per woman)
No. of data38
Regression equation
Y = -0.210414 X +2.418
Correlation coefficient (r)-0.227
Coefficient of determination (R2)0.052

Suicide - all ages (per 100,000 population)
No. of data38
Regression equation
Y = -1.984660 X +20.336
Correlation coefficient (r)-0.120
Coefficient of determination (R2)0.014