• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month
Page
  1. 1
    1
  2. 2
    2
  3. 3
    3
  4. 4
    4
  5. 5
    5
  6. 6
    6
  7. 7
    7
  8. 8
    8
  9. 9
    9
  10. 10
    10
  11. 11
    11
  12. 12
    12
  13. 13
    13
  14. 14
    14
  15. 15
    15
  16. 16
    16
  17. 17
    17
  18. 18
    18
  19. 19
    19
  20. 20
    20
  21. 21
    21
  22. 22
    22
  23. 23
    23
  24. 24
    24
  25. 25
    25
  26. 26
    26
  27. 27
    27
  28. 28
    28
  29. 29
    29
  30. 30
    30

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

Extracts from this document...

Introduction

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.

Middle

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.

Conclusion

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.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE Patterns of Behaviour section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related GCSE Patterns of Behaviour essays

  1. Peer reviewed

    Rates of Reaction

    5 star(s)

    There are also two other simple ways of increasing the rate of reaction. These are: 1) Stirring - The effect of stirring increases the rate of reaction because it causes the particles to move quicker and so each collision between the particles becomes more violent.

  2. chemistry rate of reaction

    In a less concentrated acid the number of particles would be lower, so the rate of reaction is slower whereas in a more concentrated acid the number of acid particles is greater so the number of collisions is greater and the rate of reaction is faster.

  1. Rate Of Reaction

    The volume of gas given off - this involves the use of a gas syringe to measure the volume of gas given off. In this investigation the reaction that will take place is Hydrochloric acid + calcium carbonate calcium chloride + carbon dioxide + water. 2HCl(aq) + CaCO3(s) CaCl2(aq)

  2. Free essay

    Close Your Eyes

    *Louise* I hated this. It was my first day at my new school and already people were talking about me. Yes I'm new, big deal, get over it already. It's like they'd never seen a girl before which was kind of hard to believe seeing as they all were them.

  1. Rates of Reaction- Hydrolysis of Urea by Urease

    The average reaction time at a pH of 8 was 79.48s, a 38.14% increase from the reaction time at a pH of 7. Therefore from the experiment results, and as seen on the graph, it would be correct to conclude that the optimum pH conditions for urease would be approximately 7 or neutral.

  2. RATE OF REACTION

    I will also ensure that there is the same amount of distilled water in each test tube and the same amount of water in each water bath. I will not touch the potato cylinders with my hands as I might accidentally alter the mass and could affect the experiment.

  1. Investigating the rate of a reaction

    2.0 1 2 3 4 5 Average Equipment List * Conical Flask - This is where the reaction between the hydrochloric acid and calcium carbonate will take place. * Rubber Bung - This will connect to the end of the conical flask and then connect to the tubing so no gas can escape.

  2. Rate of Reaction

    I will also connect the gas syringe to a clamp. The gas syringe would be connected to a delivery tube. The equipment will be placed at the centre of the table due to safety hazards. 3) The other end of the delivery tube would be connected to the flask,

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work