6. In each of the four examples listed below, one of the given variables is independent (x) and one of the given variables is dependent (y). Indicate in each case which variable is independent and which variable is dependent.

I. Rainfall; Crop yield
II. Taxi fare; Length of ride
III. Alcohol consumption; Blood alcohol level
IV. Average annual snowfall; Geographic location

I got:
I. Dependable variable
II. Independent variable
III. Independent variable
IV. Dependable variable

Please let me know if its correct?

You have two variables in each example. Which is which? The term is dependent, not dependable.

An independent variable is the potential stimulus or cause, usually directly manipulated by the experimenter, so it could also be called a manipulative variable.

A dependent variable is the response or measure of results.

I. Dependent variable; Independent variable

II. Independent variable; Independent variable
III. Independent variable; Dependent variable
IV. Dependent variable; Dependent variable

Sorry I misread it. Is this correct?

Your answers for the first and fourth examples are incorrect. In the case of rainfall and crop yield, rainfall is the independent variable because it is the factor that can be controlled or manipulated. Crop yield, on the other hand, is the dependent variable because it is influenced by the amount of rainfall.

For the fourth example, average annual snowfall is the dependent variable because it is affected by the geographic location. The geographic location determines the amount of snowfall, so it is the independent variable.

Therefore, the correct answers are as follows:

I. Rainfall: Independent variable; Crop yield: Dependent variable
II. Taxi fare: Dependent variable; Length of ride: Independent variable
III. Alcohol consumption: Independent variable; Blood alcohol level: Dependent variable
IV. Average annual snowfall: Dependent variable; Geographic location: Independent variable