(MULTIPLE CHOICE): 1- In regression another name for the independent variable is a- the regressor variable. b- the predictor variable. c- both (a) and (b). d- neither (a) nor (b). (1 pts) 2- A probabilistic model is a determanistic model plus random error. a- TRUE b- FALSE (1 pts) 3- A simple linear regression line estimates
Prothrombin time (PT) and activated partial thromboplastin time (APTT) are tests that evaluate the release of specific clotting factors by measuring the time it takes for a clot to form after certain reagents are added to a blood sample.
The partial thromboplastin time is an important test because the time it takes your blood to clot may be affected by: 1  Blood-thinning medicine, such as heparin. 2  Low levels of blood clotting factors. 3  A change in the activity of any of the clotting factors.  The absence of any of the clotting factors.