The charts below show the levels of participation in education and science in developing and industrialised countries in 1980 and 1990.


The line graphs show the correlation between the ownership of common household electrical devices and the duration of housework done by families in a country between 1920 and 2019.
The first line graph illustrates the percentage of households that owned electrical appliances - namely washing machines, refrigerators, and vacuum cleaners from 1920 to 2019 in one country. The second graph shows the number of hours spent per week on housework per household during the same period.