The control values for both controls for the prothrombin test were ranging between the mean and$\pm$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:

Question

Quizplus · Accepted Answer

This is an example of a shift, as the values consistently shifted from being within the mean and ±1 SD to being consistently between +1 and +2 SDs starting on day 20.

The Control Values for Both Controls for the Prothrombin Test ±\pm±

The Control Values for Both Controls for the Prothrombin Test $\pm$