Patrick and SpongeBob love to blow bubbles Patrick found some Super Bubble Soap at Sail-Mart. The ads claim that Super Bubble Soap will produce bubbles that are twice as big as bubbles made
with regular bubble soap. Patrick and SpongeBob made up two samples of bubble solution. One
sample was made with 5 oz. of Super Bubble Soap and 5 oz. of water, while the other sample was
made with the same amount of water and 5 oz. of regular bubble soap. Patrick and SpongeBob used
their favorite bubble wands to blow 10 different bubbles and did their best to measure the
diameter of each one. The results are shown in the chart,
Bubbles (Diameter in centimeters)
1. What did the Super Bubble ads claim?
Bubble Super Bubble Soap Regular Bubble Soap
1
15
10
2. What is the independent variable?
2
10
5
3
12
16
3. What is the dependent variable?
4.
18
14
4. Look at the results in the chart.
5
22
11
5. Calculate the average diameter for each
6
13
12
bubble solution.
7
16
11
8
18
15
a. Super Bubble :
cm
9
15
13
Regular Soap =
cm
10
12
6
b. What should be their conclusion?
6.
the results reliable? Why or why not?
Doc PS-Experimental Design - Independent & dependent Variable de