CQIA Quality Tools & Techniques for Problem Solving 2

Question 1

A quality team uses a scatter diagram and finds a correlation coefficient of +0.92. What does this indicate?

Accepted Answer

A strong positive relationship between variables

Answer

A correlation coefficient of +0.92 indicates a strong positive relationship, meaning as one variable increases, the other tends to increase as well.

Question 2

In a fishbone (Ishikawa) diagram, the 6M categories include Machines, Methods, Materials, Measurement, Mother Nature, and:

Accepted Answer

Manpower

Answer

The traditional 6Ms in a fishbone diagram are Machines, Methods, Materials, Measurement, Mother Nature (Environment), and Manpower (People).

Question 3

Which run chart pattern indicates a potential special cause when seven or more consecutive data points fall on the same side of the median?

Accepted Answer

Run

Answer

A run of seven or more consecutive points on one side of the median is a non-random signal suggesting a special cause in a run chart.

Question 4

A team wants to collect data on defect types during production. Which tool is BEST for tallying frequency of occurrence in real time?

Accepted Answer

Check sheet

Answer

A check sheet is designed for real-time structured data collection, allowing team members to tally occurrences as they happen.

Question 5

The 80/20 rule in quality improvement means that approximately:

Accepted Answer

80% of effects come from 20% of causes

Answer

The Pareto Principle (80/20 rule) states that roughly 80% of problems or effects result from 20% of the causes.

(CQIA) ASQ Certified Quality Improvement Associate Practice Test