Pareto Diagrams

Click here to view a video on how Pareto diagrams are made using SPC for Excel

 

Pareto Diagram Example

 

If all you need to make are Pareto diagrams, look no further. Our SPC software makes Pareto diagrams and can easily update existing Pareto diagrams with new data. And our SPC software makes moving the Pareto to Word or PowerPoint easy -- one click and the chart is moved, perfectly sized -- no more copying, pasting and resizing!

For more information on Pareto diagrams, please see our June 2004 newsletter on Pareto diagrams on our website. The example below shows how to construct a Pareto diagram using the SPC for Excel software. There are four different options for data entry.

 

Pareto Diagram Data Entry Options

A company is monitoring returned goods and reasons for those returns. Data has been collected and we want to use a Pareto diagram to highlight returned goods by product and reason for return.

Option 1: Frequencies Already Totaled

The categories are in one column or row and the frequencies are in another column or row with the frequencies already totaled. The columns and the rows do not have to be adjacent to each other. The table below shows the data entered as columns.

 

Products Number of Returns

A

15

B

25

C

8

D

2

 

Option 2: Frequencies Need to be Totaled

The categories are listed in a range on the spreadsheet. There is no list of unique categories, and the frequencies need to be determined. The data can be in multiple rows and columns. Empty cells can be included. The table below shows the data entered in a number of columns and rows. The program will total each unique entry and develop a Pareto diagram based on those totals.

 

Customer Did Not Need

Customer Did Not Need

Customer Did Not Need

Broken

 

Broken

Wrong Quantity

Wrong Quantity

 

Wrong Quantity

Wrong Quantity

Wrong Quantity

Salesman Ordered Wrong

Salesman Ordered Wrong

Salesman Ordered Wrong

 

 

Wrong Quantity

Wrong Quantity

Wrong Quantity

Wrong Quantity

Broken

Broken

Broken

Customer Did Not Need

Customer Did Not Need

Customer Did Not Need

Salesman Ordered Wrong

 

Salesman Ordered Wrong

Wrong Quantity

Wrong Quantity

 

 

Option 3: Frequencies per Period in Columns

The categories are in one column and the frequencies are in columns. The frequencies are already summed by column (e.g., week). The data entry requirements are shown below. The data must be in columns. The program will total the results and develop the Pareto.

Category

Week 1

Week 2

Week 3

Late Shipments

10

7

8

Wrong Material

8

5

3

Wrong Address

4

3

6

Not Complete

3

5

4

Wrong Price

6

2

1

 

Option 4: Frequencies per Period in One Column

Similar to option 3 but the categories and frequencies are listed by rows instead of columns. The data entry requirements are shown below. The data must be in columns. The program will total the results and develop the Pareto diagram.

Week

Product

Number of Returns

1

A

4

1

B

2

1

C

12

1

D

3

2

A

0

2

B

3

2

C

1

2

D

4

3

A

4

3

B

2

3

C

5

3

D

1

4

A

8

4

B

1

4

C

10

4

D

1

 

Once the data is entered, you select the Pareto diagram icon from the SPC Menu, complete the input form, and the Pareto diagram is developed.

 

Pareto Diagram Options

  • Adding a cumulative line
  • Adding dates of data collection
  • Placing the categories on the vertical axis instead of the horizontal axis
  • Excluding items with frequencies below a certain value from the analysis (great when you have lots of items, such as reason codes, and many of them have only one or two occurrences)

 

If you need to teach Pareto diagrams, we offer a complete teaching guide for Pareto diagrams.

SPC for Excel

Our SPC software, SPC for Excel, provides an easy way to perform statistical analysis in Microsoft Excel. This SPC software is very cost effective and user-friendly.

At the same time, it is a very powerful statistical package that meets the needs of most professionals - green belts, black belts, quality professionals, quality assurance, front-line personnel, supervisors, quality control, controllers, engineers, and laboratory personnel - anyone who wants to improve their data analysis.

 

 Buy SPC for Excel Now

 

Watch our SPC for Excel Introductory Video

 

Overview of SPC for Excel

At only $219 for a single user, SPC for Excel is an attractive alternative for many organizations. It is the perfect tool to use for statistical analysis, process improvement, problem solving and statistical training. Our SPC software is used internationally in over 60 countries. You also receive regular revisions to your version with no maintenance fees!  And we have great discounts for multiple users!

The software includes control charts, Pareto diagrams, histograms, scatter diagrams, fishbone diagrams, process capability analysis, measurement systems analysis, regression, experimental design, hyptoheses testing, nonparametric analysis and much more.    The software works with Excel 2000 through Excel 2010.

The links below provide more details on the SPC for Excel software.

Statistical Tools in SPC for Excel

Demo

User Support, Upgrades, Systems Requirements

Customer Feedback

Software Videos ("How to")

Ordering Information

 

Download Free SPC for Excel Demo

 

 Buy SPC for Excel Now

 

Watch our SPC for Excel Introductory Video