Learning objectives Collect data for student’s pulse rates and reaction times Explain the importance of obtaining large amounts of data Calculate the range.

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Presentation transcript:

Learning objectives Collect data for student’s pulse rates and reaction times Explain the importance of obtaining large amounts of data Calculate the range of results Determine the mean values and explain why it is more reliable

Pulse rates The range = the highest value – the lowest value Reading Pulse rate beats/min 1 2 3 4 5 6 Range Mean The range = the highest value – the lowest value The mean = readings 1 +2 + 3 + 4 + 5 + 6 6

Reaction times The range = the highest value – the lowest value Reading Reaction time using sight (s) Reaction time using sight and touch (s) 1 2 3 4 5 6 Range Mean The range = the highest value – the lowest value The mean = readings 1 +2 + 3 + 4 + 5 + 6 6

Reaction times Present your results as a bar chart Reading Reaction time using sight (s) Reaction time using sight and touch (s) 1 2 3 4 5 6 Range Mean Present your results as a bar chart Use error bars to show the range of values Discuss your results