The standard statistical usage, as I understand it, is that precision
refers to how close repeated observations are to one another, and accuracy
how far they are from the true value. Thus, if I said that that human
height is always 1.8 metres, that would be very precise but not at all
accurate.
Martin
On Wed, 20 Mar 2019 at 17:34, Allan Reese <[log in to unmask]>
wrote:
> I queried with the vendor a description of a measuring device advertised
> as "precision 0.01 accuracy 0.2" [unit omitted as irrelevant. The
> retailer queried the supplier, who confirmed that was intended. I'm sure
> it is nonsensical - the device is displaying two digits, neither of
> which is reliable. Are there any metrologists on the list who care to
> comment?
>
> Allan
>
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