The aim of my investigation is to use and apply my understanding of statistics and statistical techniques to investigate the two following hypothesis - There is a correlation between Key Stage 3 (KS3) and GCSE results.

... INTRODUCTION The aim of my investigation is to use and apply my understanding of statistics and statistical techniques to investigate the two following hypotheses: SCHOOL A -Highgram School Hypothesis 1: There is a correlation between KS3 & GCSE results. RAW DATA (table 1) GENDER KS3 LEVEL GCSE GRADE GENDER KS3 LEVEL GCSE GRADE BOY 3 U BOY 7 A BOY 3 U GIRL 3 E GIRL 3 G GIRL 3 D BOY 4 U BOY 4 F BOY 5 E GIRL 5 E GIRL 5 C BOY 5 D GIRL 5 E GIRL 5 D GIRL 5 E BOY 5 D GIRL 6 D BOY 5 E BOY 6 D GIRL 5 D BOY 6 D GIRL 5 C GIRL 6 C BOY 5 D BOY 6 D BOY 5 D GIRL 6 C GIRL 5 C GIRL 6 E BOY 6 B BOY 6 D GIRL 6 C GIRL 6 C BOY 6 D BOY 6 D GIRL 6 D GIRL 7 B GIRL 6 A BOY 7 A GIRL 6 C GIRL 3 F GIRL 6 D BOY 3 G GIRL 6 C GIRL 4 F GIRL 7 A BOY 4 U GIRL 4 U GIRL 5 E BOY 5 E GIRL 5 E GIRL 6 B GIRL 6 B GIRL 6 C BOY 6 B BOY 6 E GIRL 6 C GIRL 6 C GIRL 6 B GIRL 6 B With my acquired raw data (table 1) I will construct a frequency table (table 2) to condense the information and make it easier to read, understand and utilise. FREQUENCY TABLE (table 2) KS3 Level 3 Level 4 Level 5 Level 6 Level 7 TOTAL Boys 3 3 7 9 2 24 Girls 4 2 10 18 2 36 TOTAL 7 5 17 27 4 60 GCSE U G F E D C B A TOTAL Boys 4 1 1 4 10 0 2 2 24 Girls 1 1 2 7 6 12 5 2 36 TOTAL 5 2 3 11 16 12 7 4 60 To make it easier to compare values and grades graphically I will use the Microsoft Excel package on my computer to construct bar charts and pie charts. Bar charts will make it easier to compare grades because they illustrate and from looking at them I will be able to compare frequencies. Yet, they can only be constructed using discrete data. Pie charts are useful as they can be used for both discrete and

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