Data Handling IQ correlation

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Data Handling Project

Introduction

For this piece of maths course work I am going to compare the correlation between year 10 and 11 KS2 and IQ results. I will be getting the information of the schools computer under Mayfield schools data.

Hypotheses

Having looked at them Mayfield data on the school computer I have come to this hypotheses. The higher the students IQ the higher their KS2 results will be. I will test this hypotheses by sampling the Mayfield data and constructing a box and whisker diagram.

The way I collected this data was to first go onto the Mayfield school data collection program and selected the year, gender, IQ, and KS2 level for all year 10 and 11 pupils, I then sampled the data by taking every third person to get at least 30 people in each level.

 I did not use levels 2 and 6 as there were not enough people in these groups to get a good comparison as I set a minimum of 30 people in each level. In order to find the correlation between the three levels I will have to find for each level the mean, median, mode, upper and lower quartile and the inter quartile range.

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After sorting the data I then went onto autograph and created a box and whisker diagrams to show the correlation better and also it shows clearly the lower and upper quartiles and the inter quartile range. The first diagram shows the data with the anomalies and the second without.

Box and whisker diagrams to show the comparisons between level 3, 4 and 5 with mixed gender including anomalies

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