Test & Outcome Variables 2

•I want to make the biggest bubbles. I test three different bubble solutions. I find the average size of bubbles from each solution. What is the test variable?

• Type of bubble solution

• Size of bubble

• Number of bubbles

• Amount of bubble solution.

•I want to make the biggest bubbles. I test three different bubble solutions. I find the average size of bubbles from each solution. What is the outcome variable?

• Type of bubble solution

• Size of bubble

• Number of bubbles

• Amount of bubble solution.

•I want to find which cheese makes a rat run through a maze the fastest. I time how long it takes a rat to complete the maze with cheddar, mozzarella, and swiss cheese. What is the test variable?

• Type of rat

• Type of cheese

• Type of maze

• Time to complete the maze

•I want to find which cheese makes a rat run through a maze the fastest. I time how long it takes a rat to complete the maze with cheddar, mozzarella, and swiss cheese. What is the outcome variable?

• Type of rat

• Type of cheese

• Type of maze

• Time to complete the maze

Tags

NGSS.MS-ETS1-2

•I think playing music during a test will improve student scores. I give 3 groups of students a test. One group listens to classical music, one group listens to heavy metal, one group has no music. I compare the test scores. What is the test variable?

• Number of students

• Type of music

• Test scores

• Type of test

•I think playing music during a test will improve student scores. I give 3 groups of students a test. One group listens to classical music, one group listens to heavy metal, one group has no music. I compare the test scores. What is the outcome variable?

• Number of students

• Type of music

• Test scores

• Type of test

•I think playing music during a test will improve student scores. I give 3 groups of students a test. One group listens to classical music, one group listens to heavy metal, one group has no music. I compare the test scores. What would be the control group?

• The group with heavy metal music

• The group with classical music

• The group with no music

• There is no control group

•I think that PC computers are easier to use than Mac computers. I give 2 groups of students a computer task. One group works on a Mac, the other group on a PC.

I measure who finishes the task faster. What is the test variable?

• Type of computer

• Type of task

• Amount of time

• Number of students

•I think that PC computers are easier to use than Mac computers. I give 2 groups of students a computer task. One group works on a Mac, the other group on a PC.

I measure who finishes the task faster. What is the outcome variable?

• Type of computer

• Type of task

• Amount of time

• Number of students

•I want to build a robot that can turn very easily. I have one robot with 3 wheels and another robot with 4 wheels. I compare the turning radius of both robots. What is the test variable?

• Number of wheels on the robot

• What the robot is made of

• Turning radius of robot

• Number of robots

Tags

NGSS.MS-ETS1-3