Component 1: Please read the examples and answer the following questions:

1-Example 1: The Bureau of Labor Statistics collects data on earnings of workers in the US classified according to various characteristics. This data contains the weekly earnings in dollars of 30 men and 30 women in two age groups (16-19, 20-24) who were working full-time in the first quarter of 2013.

1. What is the research design? (e.g., between, within or mixed design)
2. What are the independent variables?
3. What are the levels of the independent variables? Please indicate for each one.
4. What is the dependent variable?