Why can't I add a trendline to a chart in Excel 2007?

Posted by AngryHacker on Super User See other posts from Super User or by AngryHacker
Published on 2010-04-23T20:43:50Z Indexed on 2010/04/23 20:53 UTC
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excel-2007

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trendline

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charts

I created a really simple chart based on 2 columns (date and numeric value).
I click on the chart, go to Chart Tools/Layout. The Trendline drop down is greyed out.

What am I missing?

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