Question

1 - Almost all processes, regardless on whether they are goods or services, exhibit some type of variation in their output. For example, a box of cereal may say that it contains 16 ounces, but in reality, it may be a little bit more, or a little bit less. The machine pouring the cereal into the box may not be adjusted properly, and it may only put 15.8 ounces in each box, on the average. This would be considered an assignable variation.

Question 1 options:

	True
	False

2 - The three quality gurus Deming, Juran and Crosby all believe that Statistical Quality Control (SPC) is an integral part of any quality improvement program

Question 2 options:

	True
	False

3 - 'One of the main concepts to measure quality is the capability index, also known as Cpk. If a Cpk is less than 1 (for example 0.85) , then the process is inherently capable to specifications

Question 3 options:

	True
	False

4 - Statistical Process Control (SPC) involves taking a sample of the output from a process and then use that to measure the quality of the products or services while it is being produced.

Question 4 options:

	True
	False

5 - 'One of the tools of the SPC process is called a 'p' chart. This graph shows all the parameters of all the products that were produced. As long as all the products measurements fall between the upper and lower control limits, there is no need for further investigation

Question 5 options:

	True
	False

6 - To obtain a 99.7 percent confidence level in a "p" chart we would use a value of 2 for "z".

Question 6 options:

	True
	False

7 - A company has just started to implement a Statistical Control Process (SPC). The employees have taken 10 samples of 5 items each and found a total of 40 defects in all.   Which of the following is the fraction defective that can be used in a "p" chart for quality control purposes?

Question 7 options:

	10
	8
	0.8
	1.2
	40

8 - You want to determine the upper control line for a "p" chart for quality control purposes. You take several samples of a size of 100 items in your production process. From the samples you determine the fraction defective is 0.035 and the standard deviation is 0.015. If the desired confidence level is 99.7 percent, which of the following is the resulting UCL value for the line?

Question 8 options:

	0.39
	0.08
	0.06
	0.05
	none of the above

9 - "P" charts and "R" charts are used under different circumstances. When would you recommend the use of an "R" chart?

Question 9 options:

	Student grades measured from 1 to 100
	Deciding whether an airliner has sufficient fuel for its trip
	Weighing trucks at a highway inspection station to determine if they are overloaded
	Determining whether vehicles from a motor pool will run
	Determining the accuracy of a forecast of "snow"

10 - You are going to develop an "R" chart based on range statistics and you are using a sample size of 10 for your charting purposes. Which of the following is the lower control limit D3 factor for the chart?

Question 10 options:

	0.29
	0.08
	0.18
	0.22
	0.14

Answer 1