19 STM3633

the main purpose of a Pareto chart in Quality Assurance

• Find main causes of problems

• Show process changes over time

• Compare two variables

• Measure process performance

What does the 80/20 rule in a Pareto chart mean?

• 80% of time is spent on 20% of tasks

• 20% of products cause 80% of sales

• 80% of problems come from 20% of causes

• 80% of data points fall within 20% of the range

what percentage of problems is typically responsible for the majority of the issues in a pareto analysis?

• 10

• 20

• 50

• 80

The x-axis in pareto chart is:

• Categories of data

• A timeline of events

• Control limits

• Frequency of occurrence

The Pareto principle states that in many instances a small proportion of items account for a ________ percentage of some variables linked to those items.

Similarities between Juran approach and Pareto analysis

• Eliminate minor issues

• Focus on key causes

• Measure defect quantity

• Analyze employee performance

When should the Pareto analysis be used

• to focus on all problems

• to prioritize the most significant causes

• measuring employee performance

• to identify minor issues

The first step in developing a Pareto chart is:

• Define the problem

• Collect list of problems

• Calculate the cumulative percentage

• Identify the categories