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Spider Charts Collin Ferre 1 Supply Chain Management Spider Charts also known as Radar Charts By Collin Ferre BusM 361
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Spider Charts Collin Ferre 2 Spider Charts What is a Spider\Radar Chart? How is it used? Exercises Additional Resources Not actual data
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Spider Charts Collin Ferre 3 Background Spider charts are most useful when trying to compare different set of data that all relate to a certain point. They are very useful in visual comparisons of data to help choose the optimal solution or identify areas of improvement.
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Spider Charts Collin Ferre 4 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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Spider Charts Collin Ferre 5 Using Excel – Example One Suppose that you are looking to buy a computer Your top three criteria for the computer are hard drive capacity, processor speed, amount of RAM (memory), and CD\DVD drive. Use a spider chart to help you choose the best option for your computer
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Spider Charts Collin Ferre 6 Using Excel – Example One You have chosen three systems Brand ABrand BBrand C Hard Drive 60 GB80 GB40 GB Processor Speed 3.6 MHz2.6 MHz3.2 MHz RAM512 MB1024 MB512 MB CD/DVDDVD CD
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Spider Charts Collin Ferre 7 Using Excel – Example One In this example we will create a 1-10 scale to rate each aspect of the computer We will assume that the on the scale that –80 GB hard drive is a 10 – a 20 GB is a 1 –3.6 MHz processor is a 10 – a 1.6 MHz is a 1 –1024 MB Ram is a 10 – a 128 MB is 1 –DVD is a 10 - no CD/DVD is a 0
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Spider Charts Collin Ferre 8 Using Excel – Example One 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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Spider Charts Collin Ferre 9 Using Excel – Example One Step 2: A window like this will appear chose radar and click next Step 1: Select Insert from the menu bar and then choose Chart
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Spider Charts Collin Ferre 10 Using Excel – Example One Step 4: Click next and add a name to the chart. At this point you can also change font colors or the position attributes of the legend. Step 3: Enter the data range by selecting the fields with the ratings of the different components
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Spider Charts Collin Ferre 11 Using Excel – Example One Step 5: After you have changed the 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 can help you see which option best meets your needs.
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Spider Charts Collin Ferre 12 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 different components, simply use the data given in the problem
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Spider Charts Collin Ferre 13 Example Two Month Average temp in Honolulu Average temp in London Average temp in Anchorage January6419-10 February68305 March705620 April726735 May747245 June787655 July808760 August868465 September79 63 October756857 November705535 December682825 Fred is looking for a new place to open a tourist shop. One of the main criteria for the shop is the average temperature 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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Spider Charts Collin Ferre 14 Answer to Example Two One Possible answer to example 2. If Fred is looking for the best temperature year round which city would he choose?
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Spider Charts Collin Ferre 15 Applying the Principle Think of your areas of responsibility How could you use a Spider Chart in your work to help you make a better decision? How could a Spider Chart help you optimize performance?
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Spider Charts Collin Ferre 16 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
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