User Manual

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 OFF: When OFF is selected, the statistic measurements are disabled. All other functions
and buttons are enabled.
3.4.4 Statistical Analysis Parameters
Parameter
Variable
Description
Formula
MEAN

Average value




STDEV

Population
Standard
Deviation



󰇛 󰇜



SaSTDEV


Sample
Standard
Deviation





󰇛 󰇜

 

Cp


Process
Capability Index
(Dispersion)



 


CpK


Process
Capability Index
(Deviation)




 

   


Table 10 Statistical Analysis Parameters
NOTE: Variables in Table 2 - Statistical Analysis Parameters formulas:
n : The total number of samples.
x : Measurement results of each sample measurement. The data are saved in the instrument buffer memory.
USL : Upper specification limit. If NOM, % is 100±10% then USL = 110.
LSL : Lower specification limit. If NOM, % is 100±10% then LSL = 90.
When Cp, Cpk > 1.33 , the working capacity is ideal.
When 1.33  Cp, Cpk >1.00 , the working capacity is sufficient.
When 1.00  Cp, Cpk , the working capacity is insufficient.
 Hi: Incremented when the measurement result exceeds the upper limit value USL .
 Lo: Incremented when the measurement result is less than the lower limit value LSL .
 In: Incremented when the measurement result is within the limits.
 Max: Maximum measurement result among the current data set.
 MaxIndex: Sample index number that corresponds to the maximum measurement
result.