Final answer:
In a hematocrit experiment, the packed red cell volume is the dependent variable as it is measured in response to a manipulated variable.
Step-by-step explanation:
In the context of a hematocrit experiment, the packed red cell volume is typically the dependent variable. This is because it is what is being measured or observed in response to an experimental manipulation, like a change in diet, drug application, or physical activity level.
In experimental design, the independent variable represents the factor that is systematically varied by the researcher to explore its effect on the dependent variable.
Conversely, the dependent variable is the outcome of interest that is expected to change in response to the independent variable.