Pie Chart

🎬 Video Tutorial

(0:01) What is a Pie Chart?: A pie chart visually represents data as slices of a circle, with each slice showing a category’s proportion of the total. It’s useful for comparing parts within a whole.
(0:42) Calculating Angles for Pie Charts: To find the angle for each category, divide the category frequency by the total, then multiply by $360^\circ$.
(1:26) Verifying the Total Angle: Check that all angles add up to exactly $360^\circ$ before finalising the pie chart. This ensures accuracy.
(2:20) Reading a Pie Chart: To find the number of responses for any slice, divide its angle by $360^\circ$, then multiply by the total count.