AP BIOLOGY

Detailed explanation-1: -A pie chart, sometimes called a circle chart, is a way of summarizing a set of nominal data or displaying the different values of a given variable (e.g. percentage distribution). This type of chart is a circle divided into a series of segments. Each segment represents a particular category.

Detailed explanation-2: -A circle is divided into sectors same as classes of a frequency distribution table and angle of each sector is proportional to the percentage frequency of the class. This type of representation is known as pie chart.

Detailed explanation-3: -A pie chart as the name suggest is in the shape of a pie, that is, it is a circle in which all the different parts that make up some angle at the center of the circle are called sectors. Thus, from our above definition, we can see that a pie chart is divided into sectors.

Detailed explanation-4: -A pie chart is a circular chart divided into wedge-like sectors, illustrating proportion. Each sector represents a proportionate part of the whole.

Detailed explanation-5: -A pie-chart is a chart that uses sectors of circle to show relative sizes of the data.