A student carried out an investigation into the effect of exercise on their heart rate.
The student found their heart rate at rest. They did this by sitting down, counting the number of heartbeats in 15 seconds, and then multiplying this to obtain the number in 60 seconds.
The student then exercised for 10 minutes. After 10 minutes, the student stopped exercising and measured their heart rate for the 3 minutes after stopping.
Table 3.1 shows some of their results.
(a(i))[2]
Fill Table 3.1 by adding the two missing numbers.
(a(ii))[2]
The student’s resting heart rate was $68$ heartbeats per minute. Use this information together with the table data to describe how the student’s heart rate changed during this investigation.
(b(i))[6]
Plan an investigation to find out which of two athletes is the fittest.
(b(ii))[1]
State the dependent variable in your investigation.
Worked solution & mark scheme
This 11-mark question has a full step-by-step worked solution and mark scheme. One marking point: “$88$” …