The line bar chart illustrates the differences in weekly income across eight selected categories over two years: 1968 and 2018, respectively. The categories include food, housing, fuel and power, clothing and footware, h
The given line graphs illustrate the percentages of electrical appliances' ownerships and the hours per week spent doing housework in one country from 1920 to 2019. Overall, there are two noticeable points in the line gr
The chart displays data on science qualifications of people in Malaysia and Singapore. It is clear that the majority of people don't have qualifications in science and the higher the science qualification is, the fewer p
The diagram illustrates the rate of total world population in 4 countries as India, China, USA and Japan in 1950 and 2002, even the campaigns for 2050.
The graph illustrates the number of school-boys in developing countries and developed countries with the boy and girl engaged in different levels of education in 1990 and 1998 and the target of these countries.