Tweet
Question: You have just read a long and rather difficult two-page text about fluctuations in the water level of a lake in Africa. You have to write a summary.How do you rate the usefulness of the following strategies for writing a summary of this two-page text? - I carefully check whether the most important facts in the text are represented in the summary.
Choices: 1 "Not useful at all" - 6 "Very useful"
Data: Average score
Period:
Area:
38 countries/ areas
Highlight:
1 Republic of Korea4.56
2 Portugal4.55
3 Ireland4.47
4 Spain4.46
5 Italy4.42
6 Estonia4.40
6 Mexico4.40
8 Chile4.33
9 France4.32
9 Turkiye4.32
11 Germany4.31
12 Poland4.30
13 Switzerland4.28
14 Hungary4.27
14 Japan 4.27
16 Greece4.25
17 United States4.23
18 Austria4.22
19 Finland4.17
20 Canada4.13
21 New Zealand4.12
22 Australia4.09
22 Lithuania4.09
24 Denmark4.08
24 United Kingdom4.08
26 Luxembourg4.07
26 Sweden4.07
28 Latvia4.06
29 Costa Rica4.04
30 Belgium4.00
31 Slovenia3.98
32 Norway3.89
33 Colombia3.87
34 Czech Republic3.84
35 Israel3.82
36 Iceland3.79
37 Netherlands3.73
38 Slovakia3.67

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 = -1.140775 X +11.450
Correlation coefficient (r)-0.397
Coefficient of determination (R2)0.158

GDP per capita (current US$)
No. of data38
Regression equation
Y = -15441.977180 X +108491.560
Correlation coefficient (r)-0.124
Coefficient of determination (R2)0.015

Life expectancy at birth - Both sexes (years)
No. of data38
Regression equation
Y = 0.632954 X +77.795
Correlation coefficient (r)0.054
Coefficient of determination (R2)0.003

Fertility rate, total (births per woman)
No. of data38
Regression equation
Y = -0.500231 X +3.658
Correlation coefficient (r)-0.369
Coefficient of determination (R2)0.136

Suicide - all ages (per 100,000 population)
No. of data38
Regression equation
Y = 1.355843 X +6.783
Correlation coefficient (r)0.056
Coefficient of determination (R2)0.003