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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:
77 countries/ areas
Highlight:
1 China4.86
2 Viet Nam4.68
3 Singapore 4.57
4 Republic of Korea4.56
5 Portugal4.55
6 Moldova4.52
7 Ukraine4.50
8 Ireland4.47
9 Spain4.46
10 Brunei Darussalam4.43
11 Italy4.42
12 Estonia4.40
12 Mexico4.40
14 Romania4.39
15 Chile4.33
16 France4.32
16 Indonesia4.32
16 Saudi Arabia4.32
16 Turkiye4.32
20 Germany4.31
21 Poland4.30
22 Switzerland4.28
23 Hungary4.27
23 Japan4.27
23 Malaysia4.27
26 Peru4.26
27 Greece4.25
28 United Arab Emirates4.23
28 United States4.23
30 Austria4.22
31 Belarus4.20
32 Jordan4.18
33 Croatia4.17
33 Finland4.17
33 Kazakhstan4.17
33 Malta4.17
37 Canada4.13
38 New Zealand4.12
38 Russian Federation4.12
40 Albania4.11
41 Australia4.09
41 Lithuania4.09
43 Denmark4.08
43 United Kingdom4.08
45 Argentina4.07
45 Luxembourg4.07
45 Sweden4.07
48 Latvia4.06
49 Costa Rica4.04
50 Belgium4.00
50 Kosovo4.00
52 Slovenia3.98
53 Philippines3.93
54 Taiwan3.92
55 Norway3.89
56 Macao, China3.88
57 Colombia3.87
57 Hong Kong, China3.87
59 Thailand3.86
60 Bosnia and Herzegovina3.84
60 Czech Republic3.84
60 Panama3.84
63 Israel3.82
63 Morocco3.82
65 Cyprus3.81
66 Iceland3.79
67 Netherlands3.73
68 Brazil3.71
69 Slovakia3.67
70 Qatar3.66
71 Montenegro3.63
72 Uruguay3.62
73 Bulgaria3.61
74 Georgia3.59
75 Serbia3.53
76 Dominican Republic3.36
77 Azerbaijan3.22

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

No data for 161 countries.

Source
OECD PISA 2018 Compendia

Correlations with major national performance indices
Life satisfaction (10 steps)
No. of data73
Regression equation
Y = 0.137876 X +5.740
Correlation coefficient (r)0.061
Coefficient of determination (R2)0.004

GDP per capita (current US$)
No. of data77
Regression equation
Y = 5839.192891 X +9571.971
Correlation coefficient (r)0.066
Coefficient of determination (R2)0.004

Life expectancy at birth - Both sexes (years)
No. of data76
Regression equation
Y = 1.045243 X +73.985
Correlation coefficient (r)0.080
Coefficient of determination (R2)0.006

Fertility rate, total (births per woman)
No. of data76
Regression equation
Y = -0.264142 X +2.710
Correlation coefficient (r)-0.192
Coefficient of determination (R2)0.037

Suicide, age-standardized (per 100 000 population)
No. of data73
Regression equation
Y = 1.064209 X +4.610
Correlation coefficient (r)0.071
Coefficient of determination (R2)0.005