A group of children is asked which sport they like best. Their responses are shown in a pie chart whose sectors are Swimming, Running, Hockey, Tennis and Gymnastics, with central angles $120^{\circ}$, $80^{\circ}$, $60^{\circ}$ and $45^{\circ}$.
(a(i))[4]
Complete the statements relating to the pie chart.
(a(ii))[3]
Use this information to work out how many children chose gymnastics.
(b(i))[1]
A boy is picked at random. Find the probability that he takes more than $300$ seconds to get ready.
(b(ii))[2]
Complete the scatter diagram. The first six points have already been plotted for you.
(b(iii))[1]
Can the scatter diagram be used to estimate the time he will take to swim one length? Give a reason for your answer.
Worked solution & mark scheme
This 11-mark question has a full step-by-step worked solution and mark scheme. One marking point: “$55$ ” …