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  #1  
Old 07-28-2009, 10:24 AM
sswood101 sswood101 is offline
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Question Pie chart incorrect

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I created a chart/graph that was too complicated for my boss to read, so he asked me to make a simple pie chart. When I did, the percentages it calculated were incorrect and, as a result, the pieces of the pie are wrong, too. It is simple math. What's wrong here? Does anyone know of a fix?
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Old 07-28-2009, 10:27 AM
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Re: Pie chart incorrect

I'd need to see how your data is laid out. Can you upload an example spreadsheet/pie chart?
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Old 07-28-2009, 10:27 AM
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Re: Pie chart incorrect

perhaps you can tell us what data you fed the chart, what values it reported and why you think they are wrong.

An example workbook would be best
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Old 07-28-2009, 10:40 AM
sswood101 sswood101 is offline
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Re: Pie chart incorrect

I've attached a sample chart. If one does a simple percentage calculation, e.g. 303.45/1797, the result should be 16.88%. My chart indicates 14%. Same is true of the other chart on the worksheet.
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File Type: xls Sample chart.xls (18.5 KB, 2 views)
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Old 07-28-2009, 10:46 AM
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Re: Pie chart incorrect

% is of total
i.e
303.45
1797.00 +
=
2100.45
so
303.45/2100.45 % = 14.4469
thats why
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Old 07-28-2009, 10:49 AM
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Re: Pie chart incorrect

pie charts work out the % of the items as a total rather than item 1 as a percentage of item 2.

so that's 303.45/(303.45+1797.0) = 14.4%
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Old 07-28-2009, 10:53 AM
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Re: Pie chart incorrect

Thank you folks. Now I understand. Where would I be without you all?
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