The type of graph you use depends on the type of data you want to represent. In a bar chart, the height of the bar shows the frequency of the result. As the height of bar represents frequency ...

When choosing colors to represent different categories ... way can go a long way to achieving visual consistency. As noted in the pie chart section, the largest piece of data should always start at ...

The data to compile the Official Charts is drawn from a highly complex tracking service representing one of the most sophisticated ongoing market research programmes anywhere in the world.