[Python-Dev] PEP 418: Add monotonic time, performance counter and process time functions

Terry Reedy tjreedy at udel.edu
Wed Apr 18 21:50:13 CEST 2012

On 4/18/2012 2:45 AM, Stephen J. Turnbull wrote:
> On Wed, Apr 18, 2012 at 8:25 AM, Victor Stinner
> <victor.stinner at gmail.com>  wrote:
>> Ok ok, resolution / accuracy / precision are confusing (or at least
>> not well known concepts).
> Maybe not to us, but in fields like astronomy and mechanical
> engineering there are commonly accepted definitions:
> Resolution: the smallest difference between two physical values that
> results in a different measurement by a given instrument.
> Precision: the amount of deviation among measurements of the same
> physical value by a single instrument.
> Accuracy: the amount of deviation of measurements by a given
> instrument from true values.

These are standard definitions in US English that I learned in physics 
and statistics decades ago.

Terry Jan Reedy

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