Home Chapter 6 Quiz

# Quiz

This activity contains 15 questions.

## Special causes of variability can also be called __________.

 assignable variable assessable statistical

## A process is said to be out of statistical control if ____________ are operating on it.

 one or more common causes two or more common causes one or more special causes two or more special causes

## What type of error should be labeled in block D shown above?

 Failure to Detect Controlled Limit False Alarm Warning

## Which of the following is not an assumption for use of the chart?

 The quality of successive items are independent. Intermediate values are possible outcomes for an event. All samples contain the same number of items, n. The probability, p, of a nonconforming item is constant.

## Determine the type of graphical pattern represented by the above figure.

 stratification cyclic shift in process level mixture

## Proportion nonconforming charts, or p charts, differ from number nonconforming charts, or charts in that they employ the _______________ items in samples.

 the proportion of conforming the proportion of nonconforming the average of conforming the average of nonconforming

## Which of the following events indicate that a process is out of control?

 Two out of three consecutive points fall above the limits or two out of three consecutive points fall below the limits. A point falls above the upper control limit or below the lower control limit. Four out of five consecutive points fall above the limits or four out of five consecutive points fall below the limits. All of the answers are correct.

## If the number of conforming or acceptable items is counted instead of the number nonconforming, the chart is referred to as a:

 np chart. p chart. c chart. yield chart.

## The following data has been collected for the number of defective parts coming off an assembly line.Calculate the value of p.

 0.18 0.105 0.128 0.08

## The following data has been collected for the number of defective items coming off an assembly line.Determine the value of UCL.

 40.819 28.328 32.716 35.973

## The following data has been collected for the number of defective parts coming off of an assembly line.What is the lower control limit for the proportion of nonconforming items?

 0.253 0 0.467 0.134

## The following data has been collected for the number of defective parts coming off of an assembly line.How many points fall outside the upper or lower control limits?

 4 3 2 1