1.  Which people are in the control group?
 

    2.  What is the independent variable?
 

    3.  What is the dependent variable?
 

    4.  What should Mr. Krabs' conclusion be?
 

    5.  Why do you think 10 people in group B reported fresher breath?
 
 

    6.  What was the problem that SpongeBob wanted to investigate?
 

    7.  What is the independent variable?
 

    8.  What is the dependent variable?
 

    9.  What should SpongeBob's conclusion be?
 
 
 

    10.  What is the independent variable?
 

    11.  What is the dependent variable?
 

    12.  What should Squidward's conclusion be?
 

    13.  Are the results reliable?  Why or Why not?
 
 

    14.  What did the Super Bubble ads claim?
 

    15.  What is the independent variable?
 

    16.  What is the dependent variable?
 

    17  Look at the results in the chart.
            a.  Calculate the average diameter for each bubble solution.

                    Super Bubble = _______cm    Regular Bubble _______cm

            b.  What should their conclusion be?
 
 

    18.  Are the results reliable?  Why or Why not?