Exam 14: Statistical Process Control

A manufacturer of snow shovels sees a drop in the demand for snow shovels due to an unseasonally warm winter.This means that the demand experiences

A process that is out of control exhibits ________ variation.

For process control charts,using control limits corresponding to z = 3 standard deviations from the mean will capture what percentage of the random variation in the process?

The cost of inspection for three different product characteristics A,B,and C,is $10,$12 and $8 respectively.The cost of failure if any one of them breaks down is $100 (full replacement cost of the product).Where should the priority to inspect first be?

On a control chart,________ successive data points on an increasing or decreasing line require an investigation for cause of progressive change.

Graphs designed to signal process workers when nonrandom variation occurs in a process are called ________.

Samples gathered in such a way that every piece of product has an equal chance of being selected for inspection are called

Samples gathered in such a way that every piece of product has an equal chance of being selected for inspection are called ________.

Use the information below to answer the following question(s).Use the "Factors for Control Limits" Table A.3 from the textbook where required: A control chart needs to be developed to determine if the temperature for a process is within control limits.Five samples each having 4 observations are taken and the sample measurements (temperature in degrees F)are noted in the table below: -What is the LCL for a R chart?

For process control charts,to approximately capture 99% of the random variation,the control limits will need to correspond to how many standard deviations from the mean?

The control chart used to count the number nonconforming in a consistent sample space is called the ________ chart.

A measurement to determine if a defect is either present or not is known as

A control chart needs to be developed to determine if the proportion of late deliveries of a pizza delivery restaurant is within control limits.The control chart which would be most appropriate to use in this situation would be the

Each point on the control chart represents data from samples that are plotted sequentially over time.

A continuous measurement such as weight,height,or volume is known as a ________.

The control chart used to measure the proportion defective is called the ________ chart.

Quality inspection performed during the production process is called ________.

Samples which are ordered by time or sequence are called ________.

Every 10th product coming off a production line is inspected to check for quality.Such a sampling technique is called

Samples which are ordered by time or sequence are called