A teacher is concerned about absenteeism in her class and starts to observe this behavior. She notes that there is less absenteeism on rainy days. She also notes that those who are often absent appear to be cigarette smokers. She examines the grounds around the school building and finds a likely place for cigarette smoking. Then, she arranges to have an office worker posted at this place during two of her classes but not during the rest of the day. Subsequently, she compares absenteeism of these two classes with the others.

1. What type of research is this?

2. Identify and label the variables.

3. What scale of measurement is being used?

4. Write a directional hypothesis.

5. Write a null hypothesis.