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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 write a summary. Then I check that each paragraph is covered in the summary, because the content of each paragraph should be included.
Choices: 1 "Not useful at all" - 6 "Very useful"
Data: Average score
Period:
Area:
10 countries/ areas
Highlight:
1 Republic of Korea3.97
2 Japan3.44
3 Sweden3.33
4 Australia3.32
5 United States3.29
6 Canada3.22
7 United Kingdom3.19
8 Italy3.16
9 France 3.08
10 Germany3.04

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 = -0.713933 X +9.013
Correlation coefficient (r)-0.455
Coefficient of determination (R2)0.207

GDP per capita (current US$)
No. of data10
Regression equation
Y = -15145.300077 X +98970.671
Correlation coefficient (r)-0.277
Coefficient of determination (R2)0.077

Life expectancy at birth - Both sexes (years)
No. of data10
Regression equation
Y = 2.665748 X +73.192
Correlation coefficient (r)0.305
Coefficient of determination (R2)0.093

Fertility rate, total (births per woman)
No. of data10
Regression equation
Y = -0.867787 X +4.346
Correlation coefficient (r)-0.770
Coefficient of determination (R2)0.593

Suicide, age-standardized (per 100 000 population)
No. of data10
Regression equation
Y = 15.123108 X -38.867
Correlation coefficient (r)0.866
Coefficient of determination (R2)0.750