Multiple Choice
The control values for both controls for the prothrombin test were ranging between the mean and 1 SD for the first 19 days of use. Starting on day 20, the values for both were consistently between +1 and +2 SDs. This is an example of a:
A) Shift
B) Trend
C) Random error
D) Predictable error
Correct Answer:
Verified
Correct Answer:
Verified
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