Identify the independent and dependent variable in the provided experiment.
Experiment to study the correlation between number of hours of studying for an exam and the grade obtained
Independent Variable: Number of hours of studying for an exam.
Dependent Variable: Grade obtained.
Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
Identify the independent and dependent variable in the provided experiment.

### Response:
Independent Variable: Number of hours of studying for an exam.
Dependent Variable: Grade obtained.