Erik Max Francis wrote:
> Chris Angelico wrote:
>> On Tue, Jun 28, 2011 at 12:56 PM, Steven D'Aprano
>> <[email protected]> wrote:
>>> Zero sig figure: 0
>
> That's not really zero significant figures; without further
> qualification, it's one.
>
>> Is 0.0 one sig fig or two?
>
> Two.
>
>> (Just vaguely curious. Also curious as to
>> whether a zero sig figures value is ever useful.)
>
> Yes. They're order of magnitude estimates. 1 x 10^6 has one
> significant figure. 10^6 has zero.
By convention, nobody ever talks about 1 x 9.97^6 .
Mel.
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