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Contents INTRODUCTION 2 SAMPLING 2 HYPOTHESIS 2 First hypothesis 2 Second hypothesis 3 Third hypothesis 3 Fourth hypothesis 3 METHOD ON REMOVING OUTLIERS 4 PLAN 4 GRAPHS AND ANALYSIS 5 SCATTER DIAGRAMS 5 PRICES VS. AGE 5 Table of predicted age of car from the line of best fit 7 PRICES VS. AGE WITHOUT OUTLIERS 7 Table of predicted age of car from the line of best fit 8 PRICE VS. MILEAGE 9 Table of predicted mileage of car from the line of best fit 10 PRICE VS. MILEAGE WITHOUT OUTLIERS 11 Table of predicted mileage of car from the line of best fit 12 MILEAGE VS. AGE WITHOUT OUTLIERS 13 DEPRECIATION 15 Box plot 1 with outliers 16 Box plot 1b without outliers 16 ANALYSIS 17 CORRELATIONS 17 Graph 1 17 Graph 1b 17 Graph 2 17 Graph 2b 17 OUTLIERS OBSERVATIONS 18 Observations between graph with outliers and without outliers 18 Formula of outliers 18 Cars being outliers 18 Identified outliers with reasons 18 Removal on outliers 19 EQUATION OF BEST FIT 19 HYPOTHESIS CONCLUSIONS 20 First hypothesis 20 Second hypothesis 20 Coursework Improvements 20 Introduction In my coursework I have to investigate the influences in car prices of the second hand price samples I am taking. In the coursework you can choose 20 factors but I am going to choose only 2 because I consider that the 2 I...

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