Hi,

Excel does not allow trendlines on certain chart types for example 3 D
charts, what type of chart are you using?

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If this helps, please click the Yes button

Cheers,
Shane Devenshire


"JerryB" wrote:

I'm attempting to add a trendline to a series of data points in Excell 2007.
But the trendline button is not highlighted and therefore not useful. Is
there a problem with the spreadsheet or has anybody encountered this and
knows of a fix?