1. What type of study is this? Experimental? Observational? Neither? Or Both?

2. What is (are) the dependent variable(s)?

3. Classify the variable(s) you listed in #2 in each of the three ways.

4. What is (are) the independent variables?

5. Classify the variable(s) you listed in #4 in each of the three ways.

6. List two confounding variables that may offset the conclusions of this experiment.

7. What measures could have been taken in order to control for these confounding variable?

A sock company is considering branching off and manufacturing gloves. In order to determine the types of gloves to make and sell, they randomly selected and interviewed 500 people. In the interview, subject was asked their age and profession. Then they were given four different gloves: leather, cotton, fleece and polyester. After trying each pair on, they were told that they could take and keep whichever pair they preferred.

The researchers concluded that lawyers prefer leather gloves, teachers prefer cotton gloves, and adults between 18 and 30 prefer polyester of fleece gloves.