QMS 102 Study Guide - Poisson Distribution, Western Electric, Statistical Process Control

• School: Ryerson University
• Department: Quantitative Methods
• Course: QMS 102
• Professor: Clare Chua

Document Summary

Question: how do we make use of the statistics ( x and s) concepts to control quality: the statistical process control ( Today spc can be used to monitor service processes. 2)operators spend on phone processing customers" orders: cleaning and preparing for rooms in a hotel; 4)passport canada: one of the more popular elements of spc involves the use of control charts. 3)poor maintenance of machines: poor working conditions, e. g. lighting, noise, dirt, temperature, etc. 2)operator falls asleep; absent: machine malfunction, unskilled workers; 5)computer crashes: poor batch of raw material; etc, objective: identify assignable causes, the process control charts. Note: we assume that the population of measurements would follow a normal distribution: the purposes of control charts. Business statistics i dr. changping wang: show changes in data pattern, e. g. , trends, show causes of changes in data a)assignable causes b)natural causes/random variations, test for assignable causes. 2 out of the last 3 points above +2 sigma.