Medal!
Action: Observing the change in salinity of water over time.
Is the variable Independent or Dependent?

Question

Medal! 
Action: Observing the change in salinity of water over time.
Is the variable Independent or Dependent?

anonymous · Answer

The independent variable is the factor that is manipulated or changed in the experiment... Dependent variable is what is affected in the experiment, what you measure. In this the independent variable is salinity and dependent is water. https://answers.yahoo.com/question/index?qid=20110830122533AA5eiCZ

zairahernandez · Answer

Observing the change in salinity of water over time can be independent or dependent. This depends on the experiment.

anonymous · Answer

I'm going to answer the question directly because it is so poorly worded.  When we talk about dependent and independent variables, what we are really meaning is which one has no fundamental relationship with the other.

In this question, what is likely really being asked is which which variable is the dependent and which is the independent.  

Does time have any fundamental relationship with salinity?  How could time itself affect salinity?  It cannot.  So time is the independent variable and salinity is the dependent.  You can see this in the question.  "change in salinity of water OVER time".  The question tells us that salinity is changes as it we observe it through a time period.  Whatever is changing through/over something is the dependent variable.