Pie Chart

The pie chart is a pictorial representation of data that makes it possible to visualize the relationships between the parts and the whole of a variable. For example, it is possible to understand the industry count or percentage of a variable level from the division by areas or sectors. The recommended use for pie charts is two-dimensional, as three-dimensional use can be confusing. Like a pie chart, the total of the data that make up the segments must equal 360°, or the sum of the values of the circumference must always be 100%. To calculate the percentage of a pie chart, it is necessary to categorize the data, calculate the total, divide the categories, convert the rates, and calculate the degrees.