Given the following data set, identify the independent and dependent variables.
Number of hours studied and grade received for a math exam
In this data set, the independent variable is the "Number of hours studied" and the dependent variable is the "grade received" for a math exam.
Complete the following task based on the instruction and optional input provided.### Instruction:
Given the following data set, identify the independent and dependent variables.

### Input:
Number of hours studied and grade received for a math exam

### Output:
In this data set, the independent variable is the "Number of hours studied" and the dependent variable is the "grade received" for a math exam.