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	<title>Juan Carlos Méndez-García &#187; Excel</title>
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	<link>http://8020world.com/jcmendez</link>
	<description>My thoughts on business, technology and everything else</description>
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		<title>Tornado Charts in Excel 2007 Update</title>
		<link>http://8020world.com/jcmendez/2009/05/business/tools-methodologies/tornado-charts-in-excel-2007-update/</link>
		<comments>http://8020world.com/jcmendez/2009/05/business/tools-methodologies/tornado-charts-in-excel-2007-update/#comments</comments>
		<pubDate>Thu, 07 May 2009 16:05:26 +0000</pubDate>
		<dc:creator>Juan Carlos Méndez-García</dc:creator>
				<category><![CDATA[Charts]]></category>
		<category><![CDATA[Data analysis]]></category>
		<category><![CDATA[Excel]]></category>
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		<guid isPermaLink="false">http://8020world.com/jcmendez/2009/05/uncategorized/tornado-charts-in-excel-2007-update/</guid>
		<description><![CDATA[This is an update to my previous post on tornado charts.
As reader Shaun pointed out, the instructions were created under Excel 2003.  Let&#8217;s refresh them to Excel 2007.
There is no need for any external add-ins for making good-looking tornado charts.  And it takes only 5 steps.  Let&#8217;s start with data in a [...]


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		<slash:comments>3</slash:comments>
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		<title>The Devil&#8217;s guide to spreadsheet creation</title>
		<link>http://8020world.com/jcmendez/2009/04/excel/devils-guide-spreadsheet-creation/</link>
		<comments>http://8020world.com/jcmendez/2009/04/excel/devils-guide-spreadsheet-creation/#comments</comments>
		<pubDate>Tue, 21 Apr 2009 07:23:57 +0000</pubDate>
		<dc:creator>Juan Carlos Méndez-García</dc:creator>
		<br />
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		<category><![CDATA[Excel]]></category>
		<category><![CDATA[Best Practice]]></category>
		<category><![CDATA[Data]]></category>

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		<guid isPermaLink="false">http://8020world.com/jcmendez/?p=230</guid>
		<description><![CDATA[From http://www.sysmod.com/praxis/prax0404.htm#Excel
The Devil&#8217;s guide to spreadsheet creation

Just do it. Jump in and do it. The users will have to accept whatever you produce anyway.
Fire, then aim. You know what is really needed without having to ask.
Never simplify (that just makes it easier for other people to get your job); just keep adding bits without removing [...]


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		<title>Logistic model for the s-curve and project management cost estimation</title>
		<link>http://8020world.com/jcmendez/2008/12/business/logistic-model-for-the-s-curve-and-project-management-cost-estimation/</link>
		<comments>http://8020world.com/jcmendez/2008/12/business/logistic-model-for-the-s-curve-and-project-management-cost-estimation/#comments</comments>
		<pubDate>Sun, 21 Dec 2008 04:49:18 +0000</pubDate>
		<dc:creator>Juan Carlos Méndez-García</dc:creator>
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		<category><![CDATA[Business]]></category>
		<category><![CDATA[Excel]]></category>
		<category><![CDATA[Tools & methodologies]]></category>
		<category><![CDATA[PMP]]></category>
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		<guid isPermaLink="false">http://8020world.com/jcmendez/2008/12/uncategorized/logistic-model-for-the-s-curve-and-project-management-cost-estimation/</guid>
		<description><![CDATA[I posted a while ago an article on Modeling market adoption with a logistic curve in Excel.  It has been quite popular on this site, and even at some point was linked as a reference on Wikipedia.  Shameless plug &#8211; if you find it valuable, please ask Wikipedia maintainers to keep the link.
Recently [...]


Related posts:<ol><li><a href='http://8020world.com/jcmendez/2009/05/business/tools-methodologies/tornado-charts-in-excel-2007-update/' rel='bookmark' title='Permanent Link: Tornado Charts in Excel 2007 Update'>Tornado Charts in Excel 2007 Update</a> <small>This is an update to my previous post on tornado...</small></li>
</ol>]]></description>
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		<slash:comments>7</slash:comments>
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		<title>Extreme Makeover: Chart Edition &#8211; July 19</title>
		<link>http://8020world.com/jcmendez/2008/07/business/extreme-makeover-chart-edition-july-19/</link>
		<comments>http://8020world.com/jcmendez/2008/07/business/extreme-makeover-chart-edition-july-19/#comments</comments>
		<pubDate>Sat, 19 Jul 2008 10:22:28 +0000</pubDate>
		<dc:creator>Juan Carlos Méndez-García</dc:creator>
				<category><![CDATA[Business]]></category>
		<category><![CDATA[Charts]]></category>
		<category><![CDATA[Excel]]></category>

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		<guid isPermaLink="false">http://jcandkimmita.info/jc/2008/07/uncategorized/extreme-makeover-chart-edition-july-19/</guid>
		<description><![CDATA[As every week I end up receiving at lest one junkchart specimen, I&#8217;m starting the Extreme Makeover: Chart Edition series.  I&#8217;ll show the old chart, the proposed improvement, and why I believe the old one doesn&#8217;t work.  I&#8217;d love to hear your comments as well.
Here it goes:

And the makeover:
Problems:

Vertical labels: Even when the [...]


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		<title>Harmonic Averages</title>
		<link>http://8020world.com/jcmendez/2008/07/data-analysis/harmonic-averages/</link>
		<comments>http://8020world.com/jcmendez/2008/07/data-analysis/harmonic-averages/#comments</comments>
		<pubDate>Thu, 03 Jul 2008 23:16:23 +0000</pubDate>
		<dc:creator>Juan Carlos Méndez-García</dc:creator>
				<category><![CDATA[Automotive]]></category>
		<category><![CDATA[Data analysis]]></category>
		<category><![CDATA[Excel]]></category>
		<category><![CDATA[Average]]></category>
		<category><![CDATA[Fuel Consumption]]></category>
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		<guid isPermaLink="false">http://jcandkimmita.info/jc/2008/07/uncategorized/harmonic-averages/</guid>
		<description><![CDATA[This is a short note to talk about Harmonic Averages.  Most people are familiar with Weighted Averages, as they are a valuable tool for aggregation.  For instance, with the data below, the average profitability (~1735) can be easily calculated using weighted averages.

Avg_Profit = (1000*1200 + 200*300 + 500*2500 + 10*600 + 100*300) / [...]


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		<slash:comments>6</slash:comments>
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		<title>System dynamics interpretation of the logistic and Bass models</title>
		<link>http://8020world.com/jcmendez/2007/12/business/system-dynamics-interpretation-of-the-logistic-and-bass-models/</link>
		<comments>http://8020world.com/jcmendez/2007/12/business/system-dynamics-interpretation-of-the-logistic-and-bass-models/#comments</comments>
		<pubDate>Fri, 21 Dec 2007 19:42:11 +0000</pubDate>
		<dc:creator>Juan Carlos Méndez-García</dc:creator>
				<category><![CDATA[Business]]></category>
		<category><![CDATA[Excel]]></category>
		<category><![CDATA[Tools & methodologies]]></category>
		<category><![CDATA[forecast]]></category>
		<category><![CDATA[market adoption]]></category>
		<category><![CDATA[Math]]></category>
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		<category><![CDATA[modeling]]></category>
		<category><![CDATA[system dynamics]]></category>

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		<guid isPermaLink="false">http://jcandkimmita.info/jc/2007/12/business/system-dynamics-interpretation-of-the-logistic-and-bass-models/</guid>
		<description><![CDATA[I have received a number of comments regarding the Simplified Excel Model for market adoption published a few months ago.  Reader Vince asked how to extend the math behind it to comprehend effects like cross-segment interactions.
There is no simple answer, and this post is an attempt to point readers to ways to think about [...]


Related posts:<ol><li><a href='http://8020world.com/jcmendez/2009/05/business/tools-methodologies/tornado-charts-in-excel-2007-update/' rel='bookmark' title='Permanent Link: Tornado Charts in Excel 2007 Update'>Tornado Charts in Excel 2007 Update</a> <small>This is an update to my previous post on tornado...</small></li>
</ol>]]></description>
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		<slash:comments>4</slash:comments>
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		<title>Relationship between the Bass and the logistic market adoption models</title>
		<link>http://8020world.com/jcmendez/2007/07/business/relationship-between-the-bass-and-the-logistic-market-adoption-models/</link>
		<comments>http://8020world.com/jcmendez/2007/07/business/relationship-between-the-bass-and-the-logistic-market-adoption-models/#comments</comments>
		<pubDate>Tue, 31 Jul 2007 03:09:24 +0000</pubDate>
		<dc:creator>Juan Carlos Méndez-García</dc:creator>
				<category><![CDATA[Business]]></category>
		<category><![CDATA[Excel]]></category>
		<category><![CDATA[Strategy]]></category>
		<category><![CDATA[Tools & methodologies]]></category>
		<category><![CDATA[logistic]]></category>
		<category><![CDATA[market adoption]]></category>
		<category><![CDATA[Math]]></category>

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		<guid isPermaLink="false">http://jcandkimmita.info/jc/2007/07/business/relationship-between-the-bass-and-the-logistic-market-adoption-models/</guid>
		<description><![CDATA[The simplified market adoption model I described on previous postings (1,2) is an Excel implementation of a kind of logistic function.  The Bass model is one of the most popular models used in marketing, and management of technology to think about product introductions.  (See Wikipedia article).  From a mathematical perspective, when the [...]


Related posts:<ol><li><a href='http://8020world.com/jcmendez/2009/05/business/tools-methodologies/tornado-charts-in-excel-2007-update/' rel='bookmark' title='Permanent Link: Tornado Charts in Excel 2007 Update'>Tornado Charts in Excel 2007 Update</a> <small>This is an update to my previous post on tornado...</small></li>
</ol>]]></description>
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		<slash:comments>6</slash:comments>
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		<title>Market partition &#8211; Mekko chart in Excel, no add-ins</title>
		<link>http://8020world.com/jcmendez/2007/07/business/market-partition-mekko-chart-in-excel-no-add-ins/</link>
		<comments>http://8020world.com/jcmendez/2007/07/business/market-partition-mekko-chart-in-excel-no-add-ins/#comments</comments>
		<pubDate>Tue, 17 Jul 2007 04:28:05 +0000</pubDate>
		<dc:creator>Juan Carlos Méndez-García</dc:creator>
				<category><![CDATA[Business]]></category>
		<category><![CDATA[Data analysis]]></category>
		<category><![CDATA[Excel]]></category>
		<category><![CDATA[Tools & methodologies]]></category>

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		<guid isPermaLink="false">http://jcandkimmita.info/jc/2007/07/business/market-partition-mekko-chart-in-excel-no-add-ins/</guid>
		<description><![CDATA[Mekko charts are two dimensional graphs that analyze how data is partitioned against two variables, the X and Y axes. The width of the columns is proportional to data represented by the columns. Individual segment height is a percentage of the respective bar total value.


Related posts:Tornado Charts in Excel 2007 Update This is an update [...]


Related posts:<ol><li><a href='http://8020world.com/jcmendez/2009/05/business/tools-methodologies/tornado-charts-in-excel-2007-update/' rel='bookmark' title='Permanent Link: Tornado Charts in Excel 2007 Update'>Tornado Charts in Excel 2007 Update</a> <small>This is an update to my previous post on tornado...</small></li>
</ol>]]></description>
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		<slash:comments>3</slash:comments>
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		<title>Yet another in-cell Excel bar chart technique</title>
		<link>http://8020world.com/jcmendez/2007/07/business/tools-methodologies/yet-another-in-cell-excel-bar-chart-technique/</link>
		<comments>http://8020world.com/jcmendez/2007/07/business/tools-methodologies/yet-another-in-cell-excel-bar-chart-technique/#comments</comments>
		<pubDate>Fri, 13 Jul 2007 14:30:21 +0000</pubDate>
		<dc:creator>Juan Carlos Méndez-García</dc:creator>
				<category><![CDATA[Data analysis]]></category>
		<category><![CDATA[Excel]]></category>
		<category><![CDATA[Tools & methodologies]]></category>

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		<guid isPermaLink="false">http://jcandkimmita.info/jc/2007/07/business/tools-methodologies/yet-another-in-cell-excel-bar-chart-technique/</guid>
		<description><![CDATA[Two improvements over the technique described by Juice Analytics and posted in Lifehacker: better resolution and solid-looking bars that show better at different font sizes.
If your values are integers in a range 0-9 or so, you can use the REPT formula as presented there, and perhaps you like the dashed type bars, so the formula [...]


Related posts:<ol><li><a href='http://8020world.com/jcmendez/2009/05/business/tools-methodologies/tornado-charts-in-excel-2007-update/' rel='bookmark' title='Permanent Link: Tornado Charts in Excel 2007 Update'>Tornado Charts in Excel 2007 Update</a> <small>This is an update to my previous post on tornado...</small></li>
</ol>]]></description>
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		<slash:comments>0</slash:comments>
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		<title>Math on the simplified market adoption s-curve for Excel</title>
		<link>http://8020world.com/jcmendez/2007/07/business/tools-methodologies/math-on-the-simplified-market-adoption-s-curve-for-excel/</link>
		<comments>http://8020world.com/jcmendez/2007/07/business/tools-methodologies/math-on-the-simplified-market-adoption-s-curve-for-excel/#comments</comments>
		<pubDate>Sat, 07 Jul 2007 03:22:13 +0000</pubDate>
		<dc:creator>Juan Carlos Méndez-García</dc:creator>
				<category><![CDATA[Data analysis]]></category>
		<category><![CDATA[Excel]]></category>
		<category><![CDATA[Tools & methodologies]]></category>

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		<guid isPermaLink="false">http://jcandkimmita.info/jc/2007/07/excel/math-on-the-simplified-market-adoption-s-curve-for-excel/</guid>
		<description><![CDATA[I&#8217;ve got a number of questions on the simplified Excel s-curve formula I published some time ago, so here are more details for those interested in the math behind it.  The previous posting focused on how business analysts sometimes need to model market adoption, and provided a simple and easy to maintain formula to [...]


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</ol>]]></description>
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		<slash:comments>12</slash:comments>
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		<title>Junkchart and pistongeekery on the same page!</title>
		<link>http://8020world.com/jcmendez/2007/05/business/junkchart-and-pistongeekery-on-the-same-page/</link>
		<comments>http://8020world.com/jcmendez/2007/05/business/junkchart-and-pistongeekery-on-the-same-page/#comments</comments>
		<pubDate>Fri, 11 May 2007 20:47:22 +0000</pubDate>
		<dc:creator>Juan Carlos Méndez-García</dc:creator>
				<category><![CDATA[Business]]></category>
		<category><![CDATA[Data analysis]]></category>
		<category><![CDATA[Excel]]></category>
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		<description><![CDATA[The sites I refer to when I talk about charting, data analysis and good (and bad) charting techniques are normally quite different from the ones where I satisfy my gearhead lust with the news from the latest car models in the market.  This time the guys at motortrend did it for me in their [...]


Related posts:<ol><li><a href='http://8020world.com/jcmendez/2009/05/business/tools-methodologies/tornado-charts-in-excel-2007-update/' rel='bookmark' title='Permanent Link: Tornado Charts in Excel 2007 Update'>Tornado Charts in Excel 2007 Update</a> <small>This is an update to my previous post on tornado...</small></li>
</ol>]]></description>
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		<title>Modeling market adoption in Excel with a simplified s-curve</title>
		<link>http://8020world.com/jcmendez/2007/04/business/modeling-market-adoption-in-excel-with-a-simplified-s-curve/</link>
		<comments>http://8020world.com/jcmendez/2007/04/business/modeling-market-adoption-in-excel-with-a-simplified-s-curve/#comments</comments>
		<pubDate>Wed, 25 Apr 2007 05:04:43 +0000</pubDate>
		<dc:creator>Juan Carlos Méndez-García</dc:creator>
				<category><![CDATA[Business]]></category>
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		<guid isPermaLink="false">http://jcandkimmita.info/jc/2007/04/business/modeling-market-adoption-in-excel-with-a-simplified-s-curve/</guid>
		<description><![CDATA[UPDATE 10/31/2007: Here is a screencast for this model
Often business analysts need to model the adoption of a new product or service for financial planning.  There are several approaches, but a common one is the s-curve (see Wikipedia article).  Here is a simple implementation in Excel that can be easily added to your [...]


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</ol>]]></description>
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		<title>Some more JunkChart</title>
		<link>http://8020world.com/jcmendez/2007/04/business/some-more-junkchart/</link>
		<comments>http://8020world.com/jcmendez/2007/04/business/some-more-junkchart/#comments</comments>
		<pubDate>Mon, 09 Apr 2007 02:27:55 +0000</pubDate>
		<dc:creator>Juan Carlos Méndez-García</dc:creator>
				<category><![CDATA[Business]]></category>
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		<description><![CDATA[Martin Theus posts here an example of poor charting or &#8220;junk charts&#8221;.  I&#8217;ve had the opportunity to work with many organizations as a management consultant, and it&#8217;s sad to report that is more the norm than the exception to see charts like that one in the workplace.
Feeding my bad habit of thinking anytime anytime [...]


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</ol>]]></description>
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		<slash:comments>1</slash:comments>
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		<title>Reading Office 2007 files with Office 2003</title>
		<link>http://8020world.com/jcmendez/2007/02/business/reading-office-2007-files-with-office-2003/</link>
		<comments>http://8020world.com/jcmendez/2007/02/business/reading-office-2007-files-with-office-2003/#comments</comments>
		<pubDate>Fri, 23 Feb 2007 15:11:26 +0000</pubDate>
		<dc:creator>Juan Carlos Méndez-García</dc:creator>
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		<description><![CDATA[If you receive Excel files from external sources (analyst reports, etc.), chances are that you will start encountering the Excel 2007 format.  Those files will end in .xlsx, .xlsb or .xlsm instead of the current .xls
Office 2007 has a significant number of advantages, but some of us will be for a while stuck with [...]


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</ol>]]></description>
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		<title>Presenting time series of market participation</title>
		<link>http://8020world.com/jcmendez/2007/02/business/presenting-time-series-of-market-participation/</link>
		<comments>http://8020world.com/jcmendez/2007/02/business/presenting-time-series-of-market-participation/#comments</comments>
		<pubDate>Mon, 12 Feb 2007 19:58:20 +0000</pubDate>
		<dc:creator>Juan Carlos Méndez-García</dc:creator>
				<category><![CDATA[Business]]></category>
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		<description><![CDATA[One very common need in almost any industry is to show a given market, its size, the key participant and how all has evolved over the last few years.  I have used since a few years a technique I like, and yesterday I read on Juice Analytics&#8217; weblog an article describing basically the same [...]


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</ol>]]></description>
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		<title>Where is the source file of that data?</title>
		<link>http://8020world.com/jcmendez/2007/02/business/where-is-the-source-file-of-that-data/</link>
		<comments>http://8020world.com/jcmendez/2007/02/business/where-is-the-source-file-of-that-data/#comments</comments>
		<pubDate>Mon, 12 Feb 2007 15:36:48 +0000</pubDate>
		<dc:creator>Juan Carlos Méndez-García</dc:creator>
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		<description><![CDATA[On my job I usually have to present data-rich slides that are the result of analysis on sets of data. One of my pet peeves on this types of slides is the omission of the data source.  As I always point out to analysts in training, *please* do yourself a favor: put the footnote [...]


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<li><a href='http://8020world.com/jcmendez/2009/04/excel/devils-guide-spreadsheet-creation/' rel='bookmark' title='Permanent Link: The Devil&#8217;s guide to spreadsheet creation'>The Devil&#8217;s guide to spreadsheet creation</a> <small>From http://www.sysmod.com/praxis/prax0404.htm#Excel The Devil&#8217;s guide to spreadsheet creation Just do...</small></li>
</ol>]]></description>
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		<title>Easy creation of tornado charts in Excel &#8211; 5 steps, no add-ins</title>
		<link>http://8020world.com/jcmendez/2007/02/business/easy-creation-of-tornado-charts-in-excel-5-steps-no-add-ins/</link>
		<comments>http://8020world.com/jcmendez/2007/02/business/easy-creation-of-tornado-charts-in-excel-5-steps-no-add-ins/#comments</comments>
		<pubDate>Thu, 01 Feb 2007 23:50:44 +0000</pubDate>
		<dc:creator>Juan Carlos Méndez-García</dc:creator>
				<category><![CDATA[Business]]></category>
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		<description><![CDATA[UPDATE: A newer post is available, with Excel 2007 instructions and a screencast
Tornado diagrams are a classic tool of sensitivity analysis for decision analysis.  They are not used as frequently as you would expect, given how clearly they help showing the impact of different variables on a geven outcome.  As suggested by Ted [...]


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</ol>]]></description>
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<enclosure url="http://8020world.com/jcmendez/wp-content/uploads/2009/05/tornado_excel2007.mov" length="1519746" type="video/quicktime" />
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		<title>Normalize Excel tables</title>
		<link>http://8020world.com/jcmendez/2006/11/geeky-stuff/software/normalize-excel-tables/</link>
		<comments>http://8020world.com/jcmendez/2006/11/geeky-stuff/software/normalize-excel-tables/#comments</comments>
		<pubDate>Thu, 30 Nov 2006 03:51:16 +0000</pubDate>
		<dc:creator>Juan Carlos Méndez-García</dc:creator>
				<category><![CDATA[Business]]></category>
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		<description><![CDATA[Business data is quite often expressed across many dimensions.  The profitability equation in a company is very simple in concept, but in practice those revenues come across regions, product lines, products etc., making them in fact multidimensional data.
Users of OLAP systems are very aware of multidimensional data.  However, many spreadsheet users are not, [...]


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<li><a href='http://8020world.com/jcmendez/2009/04/excel/devils-guide-spreadsheet-creation/' rel='bookmark' title='Permanent Link: The Devil&#8217;s guide to spreadsheet creation'>The Devil&#8217;s guide to spreadsheet creation</a> <small>From http://www.sysmod.com/praxis/prax0404.htm#Excel The Devil&#8217;s guide to spreadsheet creation Just do...</small></li>
</ol>]]></description>
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		<title>Column &#8211; Stack combination chart in Excel</title>
		<link>http://8020world.com/jcmendez/2006/08/business/column-stack-combination-chart-in-excel/</link>
		<comments>http://8020world.com/jcmendez/2006/08/business/column-stack-combination-chart-in-excel/#comments</comments>
		<pubDate>Thu, 24 Aug 2006 12:35:20 +0000</pubDate>
		<dc:creator>Juan Carlos Méndez-García</dc:creator>
				<category><![CDATA[Business]]></category>
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		<description><![CDATA[Not very common, but sometimes useful, this chart is made up of a series of column pairs, where the one of them is a simple column and the other one is broken down in segments.

Last time I used it to show budgeted project expenditures versus actuals, month by month.  The right column, actuals, was [...]


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</ol>]]></description>
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