You gave them 5 choices: car, bus, taxi, subway and others. Let’s suppose that you conducted a survey of 100 people for a school project and asked them their preferred mode of transportation. Make sure to label all the segments with the names of the beverages and write percentages or angles in degrees inside the slices. Once you have all the angles, you can then draw a pie chart. In the same way, you can now calculate the angles in degrees for every beverage before you proceed to construct the pie chart:ġ5/150 × 360° = 36° Step 3 – Draw the Pie Chart Using the Angles: We know that 45 students like coffee, so the angle of the segment of the pie chart that denotes coffee consumers will be: Angle of coffee segment = people who prefer coffee/total students surveyed × 360 degrees = 45/150 × 360° = 108 degrees Let's use this formula in our example of beverages. If you are then asked to construct a pie chart depicting the information you have collected about students and beverages, here is what you should do: Step 1 – Calculate the Exact Number of Students Who Prefer Each Beverage:ġ0/100 × 150 = 15 students Step 2 – Calculate the Angle of Each Segment/Slice of the Pie Chart Using a Formula:Īngle of slice = frequency of data/total frequency × 360 degrees Similarly, for each beverage, you can do the calculation similar to the one given above and get your answer. Now, if I ask you how many students prefer tea, you would do the following calculation and tell me your answer: Number of students who prefer tea = 20% × 150 students = 20/100 x 150 = 30 students The following are the responses that were received: Beverages Percentage of Respondents Coffee 30% Tea 20% Soda 30% Water 10% Others 10% They were all surveyed and asked about their favorite beverage (non-alcoholic) that they like to drink on a regular basis. Let’s suppose there are 150 students in a university class.
In this section, you will learn how to measure the angle of a pie chart through two worked examples. So let’s get started! Measuring the Angle of a Pie Chart: A Step-By-Step Guide In this guide, we shall teach you how to measure the angle of a pie chart segment from given data sets or percentages to find out the real, numerical value of the quantity. Since the pie chart is circular, the total angle that corresponds to the entire data set is 360 degrees, which is equal to one entire circular rotation. The value of each slice is denoted in either percentage or in the form of an angle. It shows the distribution of data that has a discrete set.Įach segment, or slice, of a pie chart, represents a certain proportion of a total quantity. It is divided into segments to denote numerical proportions of different quantities. A pie chart is a statistical, circular illustration.