Statistics Terminology - Elcometer 456 Operating Instructions Manual

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supplier or directly to Elcometer. Contact details are
stored in the gauge - MENU/ABOUT/CONTACT.
Worldwide: sales@elcometer.com
Or USA/Canada: inc@elcometer.com
Note: Probes will eventually wear. Probe life will
depend on the number of measurements taken
and how abrasive the coating is. Probe life can
be prolonged by careful positioning of the
probe on the surface.
Replacement separate and PINIP™ probes can
be fitted by the user without the need to return
the gauge for service.
Gauges with an integral probe have to be
returned for re-programming or replacement if
the probe becomes worn or damaged.
46

13 STATISTICS TERMINOLOGY

Term Meaning
COEF OF Coefficient of Variation. The
VARIAT'N standard deviation divided by
the mean for a group of
readings, expressed as a
percentage.
HIGHEST The value of the maximum
READING thickness in a group of
readings.
LOWEST The value of the minimum
READING thickness in a group of
readings.
MEAN The average of a group of
readings; the sum of the
individual readings divided by
the number of readings.