January 2017
Beginner
882 pages
203h 41m
English
The sampling distribution of the mean of a sample of n items describes the variation among averages from sample to sample. When the sample size condition is satisfied, the sampling distribution of the mean can be modeled as a normal distribution, The standard error of the mean is the standard deviation of the sampling distribution, A Type I error occurs when we take unnecessary action (halting production when all is fine); a Type II error occurs when we fail to take appropriate action to remedy a problem (not stopping a faulty production process). The upper and lower control limits determine the probability of a Type I error, denoted by α. An X-bar chart monitors averages of samples. An S-chart monitors ...