LSS Week 4 + 5

Question 1

Why is a sample taken rather than measuring the whole population?

Answer 1

It is more time and cost effective

Question 2

The most important thing teams should consider when deciding what customer data to collect

Answer 2

?? Is the data actionable ???

Question 3

The purpose of a Gage R&R is

Answer 3

• To determine the precision, repeatability, reproducibility, and the total variation resulting from the measurement system.t system.

Question 4

Use continuous data where possible, because

Answer 4

It tells us the magnitude of the issue

Question 5

Which of the following measures of dispersion is used ONLY with the mean?

Answer 5

Standard Deviation

Question 6

What is dispersion?

Answer 6

The spread of the data

Question 7

A run chart can reveal

Answer 7

Shifts & Trends

Question 8

What is attribute/Discrete Data?

Answer 8

data that can be counted and classified into distinct categories. “yes/No” “Good/Bad” “Red/Blue/Green”

Question 9

Standard Deviation allows you to tell

Answer 9

What % should be certain distances from the Mean.

Question 10

What is a nominal-is-best quality characteristic?

Answer 10

This quality attribute is simply about whether a characteristic is present or absent, or meets a specific criterion.. are the apples red or not.

Question 11

Which measure of variation describes the distance between the highest and the lowest points of data?

Answer 11

The Range

Question 12

What are the benefits of a box and whisker plot?

Answer 12

Box-and-whisker plots are very effective and easy to read. They summarize data from multiple sources and display the results in a single graph.

Question 13

What is an advantage of Defects per Unit (DPU) -over- Rolled Throughput Yield (RTY)?

Answer 13

It accounts for multiple defects per unit of production

Question 14

What should you have at the end of the measure phase?

Answer 14

A measure, targe and a gap.

Question 15

Why should a sample be random?

Answer 15

So that it is representative of the population

Question 16

What are the primary uses of a defect location check sheet?

Answer 16

To reveal the location on a part where defects are occurring

Question 17

Pareto was an Italian economist famous for the 80/20 rule, which means

Answer 17

80 % of wealth belongs to 20% of the population

Question 18

Baseline data plays an important role in project success because it facilitates

Answer 18

Benefit estimation & Project Planning

Question 19

What term describes the probability that a product or service will go through all steps of the process without a defect?

Answer 19

Rolled throughput yield (RTY)

Question 20

A bimodal distribution means that

Answer 20

There is “two of something” impacting the process.

Question 21

What is a stem and leaf display?

Answer 21

A display that shows the shape of the distribution of the data.

Question 22

What is continuous or variable data?

Answer 22

Data that can take any value within a given range. It is measured on a scale and can be infinitely divided into smaller units, allowing for high precision like time, temperature, weight, length, and pressure.

Question 23

What is the minimum recommended sample size for collecting discrete data?

Answer 23

100 data points

Question 23

What is the minimum recommended sample size for collecting Continuous data?

Answer 23

30 Points