Height and Weight Data on High School Children Essay -- Data Handling

Missing Some Graphs Handling Data Coursework Introduction This is based on fictional data on a school called Mayfield high school. I will be comparing two variables I have chosen to compare the relationship between the height and weight of the pupils in the school. It will be involving the following year groups seven, eight and nine. The data that I have been given to me is a secondary source, which was provided to me by teacher which was from the internet. The data has provided me with each pupils name, age, year group, height, hair and eye color, and the distance from home to school, traveling method, number of brothers and sisters and KS2 results. The aim of this investigation is to find out a relationship between two variables, the two variables which I have chose to investigate are height and weight. Hypotheses To test my first hypothesis i.e. as pupils get older the boys and girls get heavier and taller. I will carry out a stratified sample of 60 boys and girls. The reason why I will do a sample is because it will show the different proportions of people in each year group and gender. Therefore my data will be representative of Mayfield High School. Once I have collected the data I will then organize the heights and weights of the girls and boys in a grouped frequency table. I will then use this table to find the mean, mode, median of the results of the heights and weights of these males and females. I will then construct a cumulative frequency graph to find and locate the median, lower quartile and upper quartile. This will then be used to draw a box plot for the heights and weights of male and females. This data will be used to help me to conclude my first hypothesis. To test hypothesis two i.e. girls in y... ... that overall my hypothesis is correct. This is shown in the graphs of the data showing the boys and girls in year eight, nine and eleven. However in the graphs showing year seven and ten proves that my hypothesis is wrong. Also my last graph shows an overall outlook of the whole population I had sampled and it shows a very positive correlation of the taller you are the heavier you are. To conclude my coursework I have learnt that all of my hypotheses are correct. My first hypothesis was the older you are the heavier you weigh. My second hypothesis was the girls in year seven are taller and heavier then boys in year seven. My last hypothesis is the taller you are the heavier you are. From investigating these I have learnt that the older you are the heavier you are, year seven girls are heavier and taller then boys and the taller you are the heavier you are.