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The preferred method for determining statistically whether factor A or B is significant requires what additional information?
Deming called the technique of studying a sample to gain understanding of the distribution of a population an “enumerative study.” His main objection to these studies was:
A store uses signs at specific points in its storage area to indicate when products need to be ordered. This practice is an example of
A team wants to make a schedule for a project showing which tasks must be done sequentially and which may be done simultaneously. Which tool is most appropriate?
What is the percentage of perfection in a process operating at +/- 3 Sigma level?
To assess the significance of factors in either a fractional- or a full-factorial experiment structure, a black belt can use
(Refer to the previous problem) To estimate the within treatment variance the experimenters would calculate the variances of:
A team’s goal is to improve information flow in a payroll function. They make thirty-three Post-It® notes, each listing an issue for further investigation. After some discussion, they group them into four categories: mandated record keeping, privacy concerns, insurance concerns and transfer concerns.
This grouping process is best described by which approach to problem solving?
A team wants a technique for determining and displaying priorities based on frequency of various defect types. They should use:
SCENARIO
A Six Sigma team is measuring the moisture content of corn starch as it leaves the conveyer belt of a dryer. They collect one sample four cups of starch at times indicated in the chart at fixed locations labeled A, B, C, and D across the end of the belt. See the diagram below.
After some work on the dryer, additional data are collected which when plotted looks like this:
Which type of variation dominates?
If the probability that event A occurs is 0.51, the probability that event B occurs is 0.64 and events A and B are statistically independent then:
A team wants a technique for obtaining a large number of possible reasons for excess variation in a dimension. They should use:
The following is a set of individual measurements:
3 5 4 5 6 3 4 3 2 4 5 6 5 7 6 4 5 5 8 7 6 6 7 7 4
Find the control limits for the individuals chart.
A full factorial experiment has three factors. Each factor has three levels. The number of test combinations or runs is:
The area under the curve value is 1, then the mean, median and mode values would be same (True/False)
Which of the following tools is used to identify potential events and contingencies for an implementation plan?
Which of the following tools would be most appropriate for collecting data to study the symptoms of a problem?
This QFD matrix was used in the design process for a ball point pen. What symbol is appropriate for the square labeled 12?
A set of data from a process has 8 readings per sample and 50 samples. The mean of the 50 sample means is 12.62. The mean of the 50 ranges is 0.18.Find control limits for the R chart.
Typically, which of the following activities is done earliest in the formation of a project team?
A management team lists nine goals across the top of a rectangle and 15 activity initiatives along the left hand side of the rectangle. If one of the activities strongly supports one of the goals a circle is placed in the box where that activity’s row intersects the goal’s column. If the activity’s support is very strong a “bulls eye” is placed in the box and if the support is weak a triangle is used.
This best describes which problem solving tool?
Perform a risk analysis to determine the expected profit or (loss) from a project which has four possible disjoint outcomes:
Outcome A shows a profit of $340,000 and has a probability of 0.25.
Outcome B shows a profit of $120,000 and has a probability of 0.40.
Outcome C shows a loss of $40,000 and has a probability of 0.10.
Outcome D shows a profit of $100,000 and has a probability of 0.25.
Customer requirement #3 has a ______________ relationship with technical feature #3.
A quality engineer employed by a hospital is asked to improve the process of medication storage in locked cabinets near patient doors. One defect that occurs rarely is that the medication caddy is left out when the cabinet is relocked. The engineer installs a gravity activated arm that will not permit the door to close when the caddy isn’t inside.
This improvement is best described by which approach to problem solving?
A random sample of 2500 printed brochures is found to have a total of three ink splotches. The rate of ink splotches in PPM is:
Causes in a cause and effect diagram often include management, measurement systems, mother nature and the four standard causes:
A team is investigating ways to reduce power outages. They determine that an outage can occur in only three ways: grid failure, local transformer failure or local overload. They then investigate each of these three events for possible causes, etc. They draw a diagram that “fans out” using the power outage as the handle of the fan.
These improvements are best described by which approach to problem solving?
There are 14 different defects that can occur on a completed time card. The payroll department collects 328 cards and finds a total of 87 defects. DPMO =:
When comparing two vendors’ machines it is found that a sample of 1000 parts from machine A has 23 defectives and a sample of 1300 parts from machine B has 36 defectives. Do the data indicate that machine B has a higher rate of defectives?
TESTED 20 Apr 2024
= 1.864 x 0.18 = 0.33
= 0.1111 x 0.18 = 0.02
