Statistics - Elcometer Protovale 331 Operating Instructions Manual

S
TATISTICS

12 STATISTICS

Your Covermeter has a Statistics feature which calculates and displays a
statistical analysis of readings as they are taken.
Statistics values are also calculated for the readings within a batch and these
values are stored in the batch.
While you are taking measurements, to enter a reading into the statistical
analysis, press
Number of
Readings
Mean
Standard
Deviation
Coefficient
of Variation
Lowest
Reading
Highest
Reading
Under
range
Low limit
or
Within
limits
High limit
or
Over range The number and percentage of readings over range (or
Blank
readings
38
R
.
Table 1: Calculated statistics values
The running value for the number of readings taken in a
group.
The average of a group of readings; the sum of the
individual readings divided by the number of readings.
A statistical measure of the spread of values in a group of
readings.
The standard deviation divided by the mean for a group of
readings, expressed as a percentage.
The value of the lowest reading taken in a group.
The value of the highest reading taken in a group.
The number and percentage of readings under range.
The number and percentage of readings below the low
limit.
The number and percentage of readings within limits.
The number and percentage of readings above the high
limit.
infinite).
Number and percentage of blank readings (skipped/not
recorded/deleted).