Part 1 - SpongeBob Experiments!

Story 1 - Krusty Krabs Breath Mints

• Mr. Krabs created a secret ingredient for a breath mint that he thinks will “cure” the bad breath people get from eating crabby patties at the Krusty Krab.
• He asked 100 customers with a history of bad breath to try this new breath mint.
• He had fifty customers (Group A) eat a breath mint after they finished eating a crabby patty.
• The other fifty (Group B) also received a breath mint after they finished the sandwich, however, it was just a regular breath mint and did not have the secret ingredient.
• Both groups were told that they were getting the breath mint that would cure their bad breath.
• Two hours after eating the crabby patties, thirty customers in Group A and ten customers in Group B reported having better breath than they normally had after eating crabby patties.

ok, fun is over - no more SpongeBob.

Let's look at some real questions....

Part II. For each experimental question, identify the independent variable (IV), dependent variable (DV), constants and the control.

• What am I changing on purpose so that I can answer my question? -- this is your Independent Variable.
• What is being measured? What data (numbers) are being collected? --this is your Dependent Variable.
• What is staying the same in all of the exeriments? -- these are your Constants.
• What is your zero IV level? What is your normal group that does not recieve any testing.---This is your Control