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qualitycontrol-135
QC CHART DEFINITIONS โ The text defines STANDARD DEVIATION (SD). What is the FORMULA for calculating Standard Deviation?
A. SD = Sum of values / Number of values
B. SD = (Maximum value โ Minimum value) / 2
C. SD = Square root of [Sum of (x โ xฬ)ยฒ / (nโ1)]
D. SD = (Measured value โ True value) / True value ร 100
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