The line graph illustrates changes in the average cost of a monthly contract for four mobile companies in a European country from January to September 2012, measured in euros.
The grouped bar chart gives the time in billions of minutes that is expended on telephone calls in Australia from 2001 to 2008. There are 3 categories in focus: local, national & international, and mobiles.
The provided chart shows data collected from two Brazilian cities, pertaining to the average number of rainy days, temperature, sunshine hours, as well as days with thunder.
The pie chart illustrate the precentage of volunteers by orgnisation between 2008and 2014.In siex typ of methods ( environment ,art, education ,health care ,sport , and others ).