1. For the next 3 questions, use the following information: Researchers are investigating how alcohol affects motor skills in rats. The rats are separated into three groups and are given different alcohol doses depending on the group they're in; low dose, medium dose, and high dose groups. After given the appropriate dose of alcohol, each rat runs in a radial arm maze and is timed to see the effects of alcohol on their coordination through the maze.

How many independent variables are there?

A. 0

B. 2

C. 3

D. 1

2. Researchers are investigating how alcohol affects motor skills in rats. The rats are separated into three groups and are given different alcohol doses depending on the group they're in; low dose, medium dose, and high dose groups. After given the appropriate dose of alcohol, each rat runs in a radial arm maze and is timed to see the effects of alcohol on their coordination through the maze.

How many dependent variables are there?

A. 2

B. 0

C. 1

D. 3

3. Researchers are investigating how alcohol affects motor skills in rats. The rats are separated into three groups and are given different alcohol doses depending on the group they're in; low dose, medium dose, and high dose groups. After given the appropriate dose of alcohol, each rat runs in a radial arm maze and is timed to see the effects of alcohol on their coordination through the maze.

How many levels of the independent variable are there?

A. 3

B. 1

C. 2

D. 0

4. A psychologist studies the temperature in the classrooms at FGCU and finds that the standard deviation is 10.5. Which of the following sentences describes in words what the researcher found?

A. On average, classrooms at FGCU are colder than average by 10.5 degrees

B. On average, the temperatures in classrooms at FGCU differ from the mean by 10.5 degrees

C. On average, classrooms at FGCU are hotter than average by 10.5 degrees

D. On average, the temperatures in classrooms at FGCU differ from the mean by 5.25 degrees