• 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
  • Level: GCSE
  • Subject: Maths
  • Word count: 1665

My hypothesis which I am going to try and find out is if there is a relationship between the height and weight difference of boys and girls in years 10 and 11.

Extracts from this document...

Introduction

MATHS COURSEWORK

My hypothesis which I am going to try and  find out is if there is a relationship between the height and weight difference of boys and girls in years 10 and 11.

The data, which I am going to use, is examples of height and weight of boys and girls from years 10 and 11. I am going to do this because I think it will be a fair selection because it is over two year groups and I will get a good selection of data

To obtain my data, I will count 1 person in every 10 until I get a total data selection of 30 pupils.  This selection will be carried out for grouping both the males and females together.  When I am carrying out a selection for the females I will carry out my selection by counting 1 girl every 5 times until I get a total of 30 females.  When I will make my last selection on the males I will get my selection by counting 1 boy every 5 times until I get a total of 30 males.

The sources of information which I have collected for the males and females is because I have chosen them randomly by

...read more.

Middle

I will find the equation of the line of best fit. This will enable me to estimate the weight.

I will then measure the bottom line of the triangle, which is representing the difference in height from one point to another.  I will then measure the vertical line and that will represent the difference in the lowest point of the line to the top and that is the weight.  I will then divide the height and weight together to get my slope.

I will also draw up 3 cumulative frequency tables using the information from the previously tables drawn up..  When I have got a cumulative frequency for each table, I will plot them on graph paper.  From these results I should be able to place these findings on the curve on the graph.  I will then be able to find the median, lower quartile, upper quartile and the inter quartile from the available data.

When I have been able to obtain the median, lower, upper and inter quartiles, I will illustrate these results in to Box plots.  The box plots will be drawn on the same scale for all 3 box plots.  I will do one for the mix, one for females and one for males.

...read more.

Conclusion

There are two outliers, which represent boys who fall outside the normal scale, and I have chosen not to include them in my correlation, as I feel they do not impact on the overall result.

I drew a triangle on the line of best fit in order to ascertain the slope on the line of best fit so that I can calculate an equation to help estimate the weight of the group.  I calculate that the equation W=0.78h+35, based on these findings.


ANALYSIS OF SCATTER GRAPH

This graph is showing 30 plots in relation to height against weight for the girls.

You can see that most of the girls are approximately the same height and weight.  There were some outliers but again I did not include these in my correlation, as they did not impact on the overall result.

I drew a triangle on the line of best fit in order to ascertain the slope on the line of best fit so that I can calculate an equation to help estimate the weight of the group.  I calculate that the equation W=0.78h+35, based on these findings.

Gary Allen

...read more.

This student written piece of work is one of many that can be found in our GCSE Height and Weight of Pupils and other Mayfield High School investigations 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 Height and Weight of Pupils and other Mayfield High School investigations essays

  1. A hypothesis is the outline of the idea/ideas which I will be testing and ...

    on whether boys are taller and weigh more in comparison to girls. Mean of Girls and Boys Weight BOYS Weight (kg) Tally Frequency (f) Mid-point (x) fx 30?w<40 IIII 4 35 140 40?w<50 IIIIIII 7 45 315 50?w<60 IIIIII 6 55 330 60?w<70 III 3 65 195 70?w<80 0 75

  2. Maths Statistics Coursework - relationship between the weight and height

    Here is the stem and leaf plot which shows all the heights from the sample. Stem and Leaf Plot showing boys' and girls' heights Stem Leaf 1.3 1,2,2 1.4 0,7,8,9 1.5 0,0,0,1,2,2,3,3,5,5,7,7,8,9 1.6 0,0,0,0,0,1,2,3,5,5,5,5,5,5,6,6,7,7,8,9 1.7 0,1,2 1.8 0,0,0,5 1.9 1 2.0 6 Key: for example: stem 1.3| 2 = 1.32

  1. Investigation on the shape and size of limpets on a sheltered rocky shore called ...

    Also I would follow one technique of measuring each limpet. To make sure I was at the right height on a shore I would not use an optical level, but instead a different technique called cross staffing.

  2. Height and Weight corralarion in boys and girls

    The Spearman's rank correlation of the height and weight of the girls is 0.79 which means that there is really strong correlation. The boys scatter graph is overall more closer to the line of best fit than the scatter graph for the girls.

  1. In this coursework I want to find out what the average height, weight, and ...

    as < 160 6 160 ? as < 165 9 165 ? as < 170 11 170 ? as < 175 7 175 ? as < 180 7 180 ? as < 185 3 185 ? as < 190 3 190 ? as < 195 0 195 ?

  2. mayfield course work -boys are generally heavier than girl. This has to do with ...

    The mean as a measure of average is higher for boys than for girls. Table 3 shows the estimated mean for boys to be 58.9kg and 50.5kg for girls. The box plot shows that the girls' inter-quartile range is 4.6kg less than the boys'.

  1. Data Analysis Investigation-Higher Tier

    1|94 |47|8 0|14| 59 Pick Girl 83 Pick Boy 38 Pick Girl 78 Pick Boy 21 Pick Girl 24 Pick Girl 86 Pick Boy 28 Pick Girl 46 Pick Girl 47 Pick Girl 49 Pick Girl 11 Pick Girl 97 Pick Boy 54 Pick Girl 32 Pick Girl 94 Pick

  2. Conduct an investigation comparing height and weight from pupils in Mayfield School.

    (Please refer to the box-and-whisker diagram on page 20). The box-and-whisker diagram shows that the girls interquartile range is 4cm less than the boys interquartile range. This suggests that the boys weights were more spread out than the girls weights. The median for the girls is 47kg. The cumulative frequency curve shows that 14 boys have a weight less than the median for the girls.

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