Spider Radar Charts

8/3/2019 Spider Radar Charts

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Spider/ Radar Charts

Prof. Rushen Chahal


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Spider Charts What is a Spider\Radar Chart?

How is it used?

Exercises

Additional Resources

0

20

40

60

80Caffine

Sodium

Calories

Total Carbs

Sugar

Protein

Soda A Soda B Soda C

Soda D Soda E

Not actual data


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Background

Spider charts are most useful when trying to

compare different set ofdata that all relate

to a certain point.

They are very useful in visual comparisons

ofdata to help choose the optimal solution

oridentify areas ofimprovement.


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How to use it

Create categories

Standardize performance definitions

Rate each performance category

Construct the chart

Plot the ratings.

Interpret and use the results.


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Using Excel Example One

Suppose that you are looking to buy acomputer

Your top three criteria for the computer areharddrive capacity, processor speed,amount of RAM (memory), and CD\DVD

drive.

Use a spider chart to help you choose thebest option for your computer


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Using Excel Example One You have chosen

three systems

Brand A BrandB Brand C

Hard

Drive

60 GB 80 GB 40 GB

Processor

Speed

3.6 MHz 2.6 MHz 3.2 MHz

RAM 512 MB 1024 MB 512 MB

CD/DVD DVD DVD CD


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In this example we will create a 1-10scale to rate each aspect of thecomputer

We will assume that the on the scalethat 80 GB harddrive is a 10 a 20 GBis a 1

3.6 MHz processoris a 10 a 1.6 MHz is a 1

1024 MB Ram is a 10 a 128 MBis 1

DVD is a 10 - no CD/DVD is a 0


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Input the data from

the table into an excel

spreadsheet

Now we can use the

Chart wizard to create

a spider chart.


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Step 2: A window like this will

appear chose radar and clicknext

Step 1: Select Insert from themenu bar and then choose

Chart


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Step4: Click next and add a name tothe chart.

At this point you can also change fontcolors or the position attributes of thelegend.

Step3: Enter the data range by

selecting the fields with the ratings

of the different components


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Using Excel Example OneStep 5: After you have changedthe colors and other attributes that

you would like Click Finish

You should have a chart that looks

similar to the one on the right.

Now you have a graphical

representation of the choice that

you are making. This graph canhelp you see which option best

meets your needs.

Computer Choices

0

5

10Harddrive

Processor speed

RAM

CD/DVD

Brand A BrandB Brand C


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Example Two -

Take a look at a more complex

situation and this time you are on

your own to create the spider chart.

In this example it will not be

necessary to rate the differentcomponents, simply use the data

given in the problem


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Example Two

Month

Average tem pin

Honolulu

Average tem pin

London

Average tempin

Anchorage

January 64 19 -10

February 68 30 5

March 70 56 20

April 72 67 35

May 74 72 45

June 78 76 55

July 80 87 60

August 86 84 65

September 79 79 63

October 75 68 57

November 70 55 35

December 68 28 25

Fredis looking for a new

place to open a tourist shop.

One of the main criteria for

the shopis the averagetemperature during the year.

He would like to compare the

temperature in 3 cities

Create a Spider Chart to help

Fred with his decision.


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Answer to Example Two

Average temperature comparison

-200

204060

80

100January

February

March

April

May

June

July

August

September

October

November

December

Average tempin Honolulu

Average tempin London

Average tempin Anchorage

One Possible answer

to example 2.

If Fredis looking forthe best temperature

year round which city

would he choose?


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Applying the Principle

Think of your areas of responsibility

How could you use a Spider Chart in your

work to help you make a betterdecision?

How could a Spider Chart help you

optimize performance?


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Additional Resources

http://www.crummer.rollins.edu/journal/articles/2003_2_radar.pdf

http://www.mori.com/pubinfo/aiz/statistical-analyses.pdf

http://www.skymark.com/resources/tools/radar_charts.asp

http://www.internet4classrooms.com/excel_radar.htm

http://web2.concordia.ca/Quality/tools/23radar.pdf

http://www.isixsigma.com/dictionary/Radar_Chart-307.htm

http://www.infinitefutures.com/essays/prez/mapping/

http://office.microsoft.com/en-us/assistance/HA010346071033.aspx

http://www.ve.com/kavachart/alacarte/applets/specialty/SpiderCharts.html

Documents

Spider Radar Charts