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Investigating Pulse Rate Plan: I am doing an experiment to measure pulse rates. I am going to run at a prolonged pace for 30,60,90 and 120 seconds. I will then take a reading of my pulse. I will repeat my experiment to give a more accurate set of results. I will be taking results on myself and two other people, so that I can compare my level of fitness and heart rate to theirs. Fair Test: To make sure that my experiment is a fair one I need to keep some factors the same each time. I need to make sure that I run for the specified amount of time, i.e. I don't want to be running for 40 seconds and then actually I was only meant to run for 30. To make sure I don't have any time related mishaps, I will use a stopwatch o keep track of times. I also need to...

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