ColoursNo. of peopleBlue18Green9Red6Yellow3Total36
Draw a pie chart showing the given information. The table shows the colours preferred by a group of people. Calculate the respective proportion of each colour and use that proportion to find the central angle. What is the percentage of the colour red?
Central angle for blue = 1836×360°=180°
Central angle for green = 936×360°=90°
Central angle for red = 636×360°=60°
Central angle for yellow = 336×360°=30°
Following is the required pie chart:
The percentage of the colour red is 17%.