• 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
  • Level: GCSE
  • Subject: Maths
  • Word count: 2289

Statistics Coursework

Extracts from this document...

Introduction

Melissa Southward

Statistics Coursework – Pulse Rates

Aim ~ The aim of my investigation is to compare pulse rates, body temperature and hours of exercise, from pupils in my school.

“The normal pulse rate for 11 – 16 year olds is 70 – 100 beats per minute.”

Hypothesis: ~ Females have faster pulse rates than males because when I researched this, I found that            

                       a female’s heart does generally beat faster than males.

                    ~ The older you are, the lower your pulse rate, because according to research, an

                        increased age means decreasing resting pulse rate and a decreased exercising pulse

                        rate.

~ The more hours of exercise you do, the slower the pulse rate because research says

                        regular exercise keeps you fit, therefore your heart doesn’t need to work twice as

                        hard.

                    ~ The year 7’s have slower pulse rates because they are forced to stay healthy and eat

                        healthy. Youngsters are also a lot more active.

                    ~ The higher the body temperature, the higher the pulse rates, because my research

                       explains that the pulse generally increases 7 – 10 beats for each degree of temperature

                       elevation. (Hypothesis for Primary Data.)

I am doing this investigation because it is interesting and important to understand the heart.

Strategy ~ The data I am going to collect are:

  • Gender (Qualitative)
  • Age (Quantitative)
  • Year Group (Quantitative)
  • Number of hours of exercise per week (Quantitative, Discrete)
  • Body Temperature (Quantitative, Continuous)      
...read more.

Middle

1-   6 ∑ D²      =    1 -6 x 17.5     =    0.98              

        n (n² - 1)                   21(21² - 1)

A rank correlation co-efficient of 0.98 suggests that there is a very strong connection between the hours of exercise you do, and the pulse rate.

(See Scatter Graph)

Unfortunately, my scatter graph does not agree with my hypothesis, as it shows that the more exercise you do, the higher your pulse rate, but only ever so slightly, as my graph shows a weak positive correlation, therefore it almost shows that there is no relationship between the number of hours of exercise a person does and, if it affects their pulse rate in girls.

Spearman’s Rank Correlation Co-efficient:

Boys ~

Pulse Rate at rest

Hours of Exercise per week

Rank for Pulse Rate

Rank for hrs of Exercise

Difference (D)

58

4

1

1

0

0

64

5

2

2

0

0

66

5.5

3

3

0

0

67

6

4

4

0

0

72

6.5

5

5

0

0

74

7.5

6

6

0

0

78

8

7

7

0

0

84

9

8

8

0

0

86

11

9

9

0

0

88

12

10

10

0

0

92

13

11.5

11.5

0

0

92

13

11.5

11.5

0

0

93

14

14

13.5

0.5

0.25

93

14

14

13.5

0.5

0.25

93

14.5

14

15

1

1

97

15

16

16

0

0

98

16

17.5

17.5

0

0

98

16

17.5

17.5

0

0

102

18

19

19

0

0

104

20

20

20.5

0.5

0.25

105

20

21

20.5

0.5

0.25

Total

2

  1. 6 ∑ D²      =      1 -   6 x 2         =   0.99

        n (n² - 1)                   21(21² - 1)

A rank correlation co-efficient of 0.99 suggests that there is a very strong connection between the hours of exercise you do, and the pulse rate.

     (See Scatter Graph)

     Unfortunately, this does not agree with my hypothesis, as it shows that the more hours of exercise

     you do, the higher your pulse rate. In this graph, it shows more clearly than the boys that there is

     a connection between the amount of exercise you do and the pulse rate, as it shows a moderate

     Positive correlation.

Primary Data ~

Year 7 Boys

Pulse Rate at Rest

Hours of exercise (week)

Body Temperature (°C)

60

10

31

62

7

35

Box Plots for Pulse Rates

64

8

34

64

8

35

Lowest Value

60

65

7

34

Lower Quartile

65.5

67

1.5

35

Median

78

70

11

33

Upper Quartile

90.5

72

20

34

Highest Value

104

72

8

34

74

14

30

82

8

36

82

5

33

84

4

37

86

8

35

86

9

32

92

6

36

92

3

33

100

10

32

102

11

33

104

10

33

Year 7 Girls

Pulse Rate at Rest

Hours of exercise (week)

Body Temperature (°C)

60

4

34

61

10

35

Box Plots for Pulse Rates

68

10

36

69

11

30

Lowest Value

60

70

5

34

Lower Quartile

72

72

3

33

Median

82

72

7

36

Upper Quartile

94

72

9

31

Highest Value

112

74

3

35

76

5

32

80

9

32

82

4

34

84

6

36

84

5

35

86

5

33

86

7

35

88

7

33

94

4

35

94

4

33

96

4

33

99

2

34

108

1.5

36

112

8

32

...read more.

Conclusion

>

Lowest Value

62

72

2

30

Lower Quartile

73

74

5

32

Median

84

74

10

29

Upper Quartile

92

74

6

28

Highest Value

104

74

9

29

79

6

30

84

4

35

84

4

31

86

3.5

29

88

3

33

91

3

35

92

2

36

92

8

30

98

2

37

98

1.5

37

100

6

31

104

5

31

Year 9 Girls

Pulse Rate at Rest

Hours of exercise (week)

Body Temperature (°C)

58

6

26

62

2

28

Box Plots for Pulse Rates

62

4

35

62

7

30

Lowest Value

58

64

5

30

Lower Quartile

65

68

9

32

Median

76

68

10

28

Upper Quartile

86.5

72

16.5

33

Highest Value

102

74

7

29

76

2

32

76

3

36

77

6

36

78

4.5

31

80

7

32

82

5

32

88

2

29

94

4.5

32

94

5

31

95

3

34

102

1.5

32

Year 11 Boys

Pulse Rate at Rest

Hours of exercise (week)

Body Temperature (°C)

62

6

31

68

9

35

Box Plots for Pulse Rates

69

4

30

69

2

27

Lowest Value

62

72

7

32

Lower Quartile

72

72

7

33

Median

79

74

6

34

Upper Quartile

89

75

6.5

32

Highest Value

101

76

10

29

77

3

35

78

5

27

79

4

29

82

8

29

82

3

28

84

1.5

27

84

6

34

88

3

35

89

5

31

93

7

29

94

2

34

94

2

36

100

1

26

101

1.5

31

Year 11 Girls

Pulse Rate at Rest

Hours of exercise (week)

Body Temperature (°C)

60

9

29

62

7

29

Box Plots for Pulse Rates

62

4

32

64

7

30

Lowest Value

60

64

3

29

Lower Quartile

64

67

1.5

29

Median

78

74

12

34

Upper Quartile

92

75

8

29

Highest Value

110

76

2

28

78

1.5

29

84

1.5

29

84

1.5

27

88

7

34

89

6

31

92

2.5

35

98

1.5

31

99

2

37

110

7

32

110

1.5

32

...read more.

This student written piece of work is one of many that can be found in our GCSE Comparing length of words in newspapers 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 Comparing length of words in newspapers essays

  1. GCSE Statistics Coursework

    adverts however we can tell from the composite bar chart that the Daily Mail has more adverts because it has more articles than the Daily Mirror. Hypothesis Two: - "The Daily Mail will generally have longer words." I believe the Daily Mail will generally have longer words because it has

  2. Maths Statistical Coursework

    It's style also compliments its aims, as it is not exactly difficult to understand, but not so much so that it's use of language can be described as merely simple.

  1. Read all about it coursework

    4 14 45 + 14 = 59 5 9 59 + 9 = 68 6 9 68 + 9 = 77 7 7 77 + 7 = 84 8 4 84 + 4 = 88 9 7 88 + 7 = 95 10 4 95 + 4 = 99 11

  2. Maths Coursework

    We may draw from this research that newspapers with more space taken up by headlines are likely to contain less information as the amount of space to write information is significantly lower. This can tell us that papers such as the tabloids may draw the readers' attention more through headlines with a large visual impact.

  1. Maths Statistics Coursework

    The second count represented the number of paragraphs at the end of the article from which I needed to take another word. I took the next word from each of those paragraphs. At that point I had the thirty words that I required from each article.

  2. Maths Coursework

    65 sentences have been chosen for each paper because the more samples are taken the more accurate the results will be. Initial Thoughts My initial thoughts are that the set task will be a very long and time-consuming job as it involves the counting of many sentences.

  1. AS Psychology Coursework- Research on Deeper Processing

    just presented to an individual, but also explained, it will be much easier to remember. Furthermore, the levels of processing experiment showed that semantic is the deepest processing level possible. This leads to a conclusion that semantic analysis results in deeper processing, which results in a longer lasting memory.

  2. The Open Box Problem

    V = L x B x H = x(36 - 2x)(36 - 2x) = x(1296 - 72x - 72x + 4x�) = x(4x� - 144x +1296) V = 4x� - 144x� + 1296x I am now going to find the gradient through the use of differentiation.

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