Guessing the length of a line

Introduction

Most people appear to think that the older you are the smarter you are. I am going to investigate this by looking gat data from year 7 and comparing it to data from year 11. Both year groups were asked to complete the same task, to guess the size

Hypothesis

Pupils in year 11 are better at guessing the length of a line than pupils in year 7.

People who are good at estimating lengths are good at estimating angles.

For both of my hypothesis I am going to be using secondary data given to me by my school, as this is less time consuming than collecting data by myself.

My sampling frame will be the results from all the girls in School from year 7 to year 11 in 2002 that completed the task.

I could take a census survey meaning that I could use every piece of data, which would be more accurate, but would also be immensely time consuming so I am going to take a sample of data.

I could also do cluster sampling but this would be too time consuming and inappropriate for my data. It wouldn’t give me a large enough sample and therefore wouldn’t be in proportion to my data.

Once I have collected my sample I am going to use mean, mode, median nd standard deviation to analyse the spread of data.

For my first hypothesis I am going to use stem and leaf diagrams and histograms to analyse my data whereas, for my second hypothesis I am going to use scatter graphs to analyse my data.