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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 try to copy out accurately as many sentences as possible.
Choices: 1 "Not useful at all" - 6 "Very useful"
Data: Average score
Period:
Area:
10 countries/ areas
Highlight:
2 Japan2.73
4 United Kingdom2.47
4 United States2.47
6 Canada2.43
8 Germany2.22
9 Italy2.00
10 France1.87

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 data7
Regression equation
Y = -0.140334 X +6.908
Correlation coefficient (r)-0.145
Coefficient of determination (R2)0.021

GDP per capita (current US$)
No. of data7
Regression equation
Y = 6780.316024 X +35052.241
Correlation coefficient (r)0.132
Coefficient of determination (R2)0.017

Life expectancy at birth - Both sexes (years)
No. of data7
Regression equation
Y = -0.378487 X +82.390
Correlation coefficient (r)-0.054
Coefficient of determination (R2)0.003

Fertility rate, total (births per woman)
No. of data7
Regression equation
Y = -0.232862 X +2.013
Correlation coefficient (r)-0.330
Coefficient of determination (R2)0.109

Suicide, age-standardized (per 100 000 population)
No. of data7
Regression equation
Y = 6.081044 X -4.605
Correlation coefficient (r)0.540
Coefficient of determination (R2)0.292