• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month
  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6

Mayfield High Statistics - I am going to investigate how your weight affects your lifestyle.

Extracts from this document...


Mayfield High Statistics Coursework Hypothesis I am going to investigate how your weight affects your lifestyle. This is my chosen investigation because I think it will be interesting to find out if your weight changes depending on which activities you undertake in your everyday life. I am going to first see if there is a difference in weights of males and females. Then find out if your favourite sport has an effect on your weight or not. Then I am going to find out whether the number of hours you spend watching T.V have an affect on your weight. And finally, I will find out whether the means of transport you use to get to and from school have an affect on your weight. But by looking into only weight, I will not be able to compare years as age affects weight, so instead I will be looking at their BMI (body mass index). I am going to see whether: * Your gender has an affect on your BMI I think that males weigh more then females because they stop growing at a later age the females. Females go through puberty earlier then males and therefore stop growing earlier then males. ...read more.


This amount, I think, will give a representative number of pupils from each year and a representative number of males and females from each year. It is important for me to have a representative sample for the population so that my end results are not biased, so when I come to compare the results they are fair and correct. Sample size = 1180 ? 10 = 118 100 I will be using the stratified sampling method. To find my sample I will be using this formula: No. of pupils in each year ? sample size Total no. of pupils in all years I will now find out how many pupils need to be chosen from each year using this formula. Year 7 = 282 ? 118 = 28.2 = 28 1180 Year 8 = 270 ? 118 = 27 1180 Year 9 = 260 ? 118 = 26 1180 Year 10 = 200 ? 118 = 20 1180 Year 11 = 168 ? 118 = 16 1180 I am now going to find out how many males and females need to be chosen from each year so that my chosen sample is representative of the males and females in each year. ...read more.


- Modal classes, this will show me which class of BMI contains the most number of pupils. I can see which modal class is higher and can then find out who has a higher BMI value, by comparing them. I am now going to start to investigate each of my hypotheses: * Your gender has an affect on your BMI I am going to be drawing cumulative frequency graphs, box and whisker diagrams, frequency polygons, and find the standard deviation, mean, mode and quartile ranges. I can then compare each of these graphs for males and females and see the variation and difference between the BMI's. These box and whisker diagram is for the males and females and shows their BMI range. The box and whisker diagram for males shows that the median value is closest to the upper quartile value, and therefore this data is negatively skewed. This means that most of the data is at the higher values, which shows that the males have a higher BMI. The box and whisker diagram for females. For this, the median is closest to the lower quartile value. This means that it is positively skewed, and most of the data is at the lower values, which means that the females BM values are low. This supports my predictions. Dina Halai 1 ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our AS and A Level Probability & Statistics 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 AS and A Level Probability & Statistics essays

  1. Marked by a teacher

    The heights of 16-18 year old young adults varies between males and females. My ...

    5 star(s)

    These intervals are an estimate for the perimeters most plausible to contain the mean value to work out the standard error for both populations. First I had to work out the standard error, but to make it a more accurate result at the interval I had to change ?

  2. AS statistics coursework - correlation coefficient between height and weight in year 11 boys ...

    To check how accurate my line of best fit is I chose 3 girls at random and put their height value into the line equation in place of x to give me a theoretical value for y (weight), which I will then compare to their actual weight: 1.

  1. Statistics Coursework

    These numbers are important, as it will tell the calculator how big the range of numbers is, e.g. 0 - 100 or 0 - 1000. So, the calculator will not give you figures bigger or higher than the maximum number entered.

  2. Analyse some of the statistics of the National Lottery (especially sales information), and see ...

    This is what one would expect if the system used is truly random. One can test how well the balls chosen fit a uniform distribution.

  1. Statistics. I have been asked to construct an assignment regarding statistics. The statistics ...

    the highest to lowest attendance compared to Birmingham's attendance being within 5,939. Cumulative Frequency Birmingham City; Attendance Frequency Cumulative Frequency <20,000 0 0 <22,000 1 1 <24,000 4 5 <26,000 4 9 <28,000 7 16 <30,000 3 19 The cumulative frequency diagram shows the Median to be 1/2 of the cumulative frequency maximum, which is 19.

  2. Descriptive Statistics 1. Mean, median and mode.

    In the right hand graph, values tend to be close to the mean, while in the left hand graph, values tend to be further from the mean. The left hand graph shows values that are move variable (see next lecture).

  1. Statistics. The purpose of this coursework is to investigate the comparative relationships between the ...

    9995 2995 6 64000 2 100 Vauxhall Vectra 13435 5 52000 2 This is randomly ordered, to get a general trend in data, so my results will not be biased. However, I have 4 pieces of missing data: I will need to fix this using Standard Deviation.

  2. As a piece of Statistics coursework, I have decided to compare two items of ...

    (Oceania Strata) x 50 ? (Population) = 14 x 50 72 = 0.194... x 50 = 9.722... = 9 1st sample unit to be chosen = (Random # x 14) + 1 = 1.064 + 1 = 2.064 = 2 2nd sample unit to be chosen = (Random # x 14)

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