Tonghui TH2523/A - Statis A;Statis B; Hi;Lo; Parameter Specifications for Statistic Analysis

TH2523 Series Operation Manual Ver1.2
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numerical keyboard. The instrument can make statistic analysis on up to 30,000 measurement
results.
3.7.4 Statis A/Statis B
Move the cursor to it and select through the soft key. When A is selected, TH2523 will
compare the measurement result with the limit ranges of its primary parameter, count times of
pass, times of higher and lower results; When B is selected, TH2523 will compare the
measurement result with the limit ranges of its secondary parameter, count times of pass, times
of higher and lower results;
3.7.5 Hi/Lo
Move the cursor to it and input the data through the numerical keyboard.
NOTE: Upper and lower limit values should match Statis A and Statis B. When the statistic
mode is Statis A, upper and lower limit values should be that of the primary parameter; when
the statistic mode is Statis B, upper and lower limit values should be that of the secondary
parameter.
3.7.6 Parameter Specifications for Statistic Analysis
1)
X
： Average value. Corresponding formula：
x
x
n


2)

：Population Standard Deviation. Corresponding formula：
2
2
x nx
n




（=
n

）
3)
s
： Sample Standard Deviation. Corresponding formula：
2
2
1
x nx
s
n




（=
1n


）
4)
p
C
： Process Capability Index (Dispersion). Corresponding formula ：
||
6
p
Hi Lo
C
s


5)
p
CK
：Process Capability Index (Deviation).