8
Figure 5.2.5
Figure 5.2.6
5.2.3.2 Data statistics
The statistics for one group data is available; press
“
”or“
”
key to determine the value of N (the applicable
scope is 2
～
99) in figure5.2.7; then press“
” to confirm.
The values of serial number n and N will be shown simultaneously with the displaying of measuring result each
time after the function setting has been taken into effect. Refer to figure 5.2.6, 5 measurements will be performed
totally, and the current measurement is the 2nd. In case of n=N, that is to say the last measurement had been
completed, the tester will automatically calculate the average
X
, standard deviation S, maximum (Max), minimum
(Min) and the range R as figure 5.2.8 showing after the hand wheel had been unloaded by turning in anti direction.
Of which, the mean value, standard deviation and range can be calculated according to the following equation.
X
=
i
X
N
1
，
S
=
2
)
(
1
1
i
X
X
N
R=Max-Min
Normally, the serial number will plus 1 after each measurement until the n is equal to N (i.e. all of
the N measurements were finished), then begin with statistical calculation. In event one of the
current measurements must be deleted, press
“
”or“ ”
key in the figure 5.2.6 when the
“√”
change to “
×
”, then unload (i.e. Lowdown the anvil). For this condition, n will not be added by 1,
and the current measurement will not take part in the statistical calculation.
Figure 5.2.7
Figure 5.2.8
Summary of Contents for 900-365
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