Exam 6: Statistical Quality Control

The person that comes from the top ranks of the organization and is responsible for providing direction and overseeing all aspects of a six-sigma implementation process is called a ________________________.

Given a sample size of 2, the lower limit for the R-chart is 0.

Upper and lower control limits are usually set at  6 standard deviations from the mean.

The probability of shipping a lot or batch of products whose proportion of defective items is greater than LTPD is called consumer's risk because ______________________.

What is the formula for an x-bar chart's center line?

The weight of a bag of sugar is an example of a variable.

What is the probability of a Type I error for a control chart with limits set at  3 standard deviations from the mean?

Define statistical process control.

The standard deviation measures the difference between the largest and smallest observations in a set of data.

Acceptance sampling occurs after the product has been produced.

What is a graph that shows the probability or chance of accepting a lot given various proportions of defects in the lot?

Setting up control charts to monitor whether a process is in control

The Six Sigma approach is organized around a _______ plan known as ________.

What is a control chart that monitors the proportion of defects in a sample?

In six-sigma programs, individuals are given __________________ titles that reflect their skills in the six-sigma process.

On a control chart, what separates common from assignable causes of variation?

A p-chart is used when we can compute only the number of defects but not the total sample size.

Which company is known for coining the term "six-sigma?"

Increasing the number of standard deviations on which control chart limits are based will decrease the Type I error.

A small range and large standard deviation imply that data observations are closely clustered around the mean.