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CUSUM CHART CALCULATION — The text explains how to calculate the CUSUM VALUE. If the mean glucose is 100 mg/dL and the individual test values on consecutive days are 98, 101, 104, 97, what is the CUSUM VALUE on DAY 4 (value = 97 mg/dL)?
A. Cusum day 4 = +3
B. Cusum day 4 = −3
C. Cusum day 4 = 0
D. Cusum day 4 = −6
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