A Brief Note On Black Belt Project Title X250 Exterior...

BB1 Advanced Statistics for Engineering: PMA Black Belt Project Title: X250 Exterior Door Handle Bezel Loose/Adrift Black Belt Candidate: Aoife Dunphy UB Number: 13027008 Date: 15/08/14 Executive summary The following tools and methodologies learned during Advanced Statistics for Engineering were applied to measurement data related to the problem of X250 (XF) exterior door handle bezel becoming adrift: Exploratory Data Analysis (EDA) Tools for the Preliminary Analysis of Data; Stable Random Behaviour, Suitability of the Normal Distribution, and Transformations; Confidence Intervals, Hypothesis-Testing and Implications of Power and Sample Size; And Other Topics and Tools for Statistical Data Analysis (MSA and Statistical process Control) It was concluded the sample was in statistical control and that most of the tools used were very useful in analysing the data, but that some further work could include increasing the sample size or finding a new supplier to compare the current one against. Contents Executive summary i Introduction and Objectives 1 Scope / Limitations and Constraints 2 Methodology 3 1. Exploratory Data Analysis (EDA) Tools for the Preliminary Analysis of Data 3 2. Stable Random Behaviour, Suitability of the Normal Distribution, and Transformations 3 3. Confidence Intervals, Hypothesis-Testing and Implications of Power and Sample Size. 3 4. Other Topics and Tools for Statistical Data Analysis 4 Results with Analysis and