Pie Chart 1: How to read a pie chart S. Kelleher

Number in a category = angle of a category 3600  total no. of people

EXAMPLE The pie chart shows the results of a survey of 240 students about which sports in their school were their favourite. How many students were there in each category?

Number in a category = angle of a category 3600  total no. of people Calculating the number for each category Number in a category = angle of a category 3600  total no. of people HURLING = 90 360  240 = 60 students ATHLETICS = 60 360  240 = 40 students RUGBY = 45 360  240 = 30 students SOCCER = 120 360  240 = 90 students BASKETBALL = 45 360  240 = 30 students CHECK: Total no. of students = 240 students