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'polyval' warning

'polyval' warning

'polyval' warning

(OP)
Hi guys,

I've been writing a program to calculate conversion rates, and when I input my data, I receive this warning from the 'polyval' function:

"Warning: Zero degrees of freedom implies infinite error bounds. "

Does anyone know what this means?

Thanks

RE: 'polyval' warning

The structure you have provided to polyval has no "df" element.

You must make this structure with polyfit.  Can't use another fitting routine, your know...

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