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Investigate the following hypothesises; Males have a faster reaction time than females, and People with a lower pulse rate will have faster reaction times.

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COURSEWORK; 'REACTION TIMES' Introduction: Once I had read the 'Reaction Times' investigation many possible hypotheses came to mind. These included such hypotheses as: * Males have faster reaction times than females. I believe this to be correct because in such events as running in athletics males are faster and this could well be due to a faster reaction time. * People with blue eyes will react faster than those with brown eyes. I believe this to be correct because it is a proven fact that people with blue eyes react faster to light which is likely to aid their reaction time. * Those under 30 will have better reaction times than those over 30. I believe this to be correct because older people tend to have slower reaction times than those of a young age. Also younger people are generally fitter so probably have a lower pulse rate, which I predict will enable them to react faster. * People with a lower pulse rate will have a faster reaction time than those with higher pulse rates because if u have a lower pulse rate you are more relaxed so can be more concentrated on the task. * People that are right handed will have faster reaction times than those that are left-handed. I believe this to be correct because right handed people in my opinion seem to have practised this type of reaction more than those that are left handed I have chosen to investigate the following hypothesises; * Males have a faster reaction time than females. ...read more.


To investigate further I will draw a cumulative frequency table to enable me to put my data into a cumulative frequency curve. This will give me an approximate idea of what the median and the inter-quartile range will be. The table can also tell me how often a particular group of results was obtained. Cumulative Frequency table to show mean average of female drops Drop (d) in cm Frequency Cumulative Frequency 5? d < 8 2 2 8 ? d < 12 3 5 12 ? d < 16 10 15 16 ? d < 20 1 16 20 ? d < 24 3 19 24? d < 28 1 20 Cumulative Frequency table to show mean average of male drops Drop (d) in cm Frequency Cumulative Frequency 5? d < 8 0 0 8 ? d < 12 5 5 12 ? d < 16 6 11 16 ? d < 20 5 16 20 ? d < 24 4 20 24? d < 28 0 20 I will now put the results from the cumulative frequency table into a cumulative frequency curve for males and females. From both cumulative frequency curves I can take an approximate median and inter-quartile range for both females and males. It tells me that the females have a smaller and lower inter-quartile range, of 4 (16 - 12=4) ...read more.


Evaluation: I could have tested reaction times in a many more ways and did not have to use just light as a stimuli for the reaction time. I could have used sound like the reaction time for someone to hear the sound of a gun at a beginning of a race and to react to that and start running. Also the subjects results could have been affected by anything from light and sound distractions to whether they had consumed a substance containing caffeine before they had taken part in the activity set for them. Some of these will not have been able to improve on but others such as where and when I had collected my data may have made possible for bias results to come up in my investigation. Whether the subjects were tired, focussed, motivated will have made a difference to their performance as well so external influences can play a big part in the alteration of results. Also if the participant had carried out this particular type of investigation before or if they trained specially to improve a reaction like those whom train for sprinting would have had a clear advantage than those whom had not carried out the experiment before. In my experiment I also found that an exact recording of how far the ruler actually dropped before it was caught hard and can be seen to have been rounded to the nearest centimetre, which will not have not given me very accurate results. Kirstie Anne Jackson Mathematics 2 ...read more.

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