The Shower from the Green Lagoon! Joey notices that his shower is covered in a strange green film. Chandler tells him that in order to remove the slime you use one cup of bleach mixed with four cups of water. Joey decides to try this out by spraying half of his shower with the mystery solution and the other half with just water. They borrow Monica and Rachel’s shower so they do not disturb the solution. After 3 days, the side with the solution looks less green Which shower side is the control group? What is the independent variable? What is the dependent variable? What should Joey’s conclusion be?
The Shower from the Green Lagoon!
Joey notices that his shower is covered in a strange green film. Chandler tells him that in order to remove the slime you use one cup of bleach mixed with four cups of water. Joey decides to try this out by spraying half of his shower with the mystery solution and the other half with just water. They borrow Monica and Rachel’s shower so they do not disturb the solution. After 3 days, the side with the solution looks less green
Which shower side is the control group?
What is the independent variable?
What is the dependent variable?
What should Joey’s conclusion be?
The independent variable in experimental analysis is any variable (parameter) whose outcome is independent of any other variable. Any variable whose outcome is determined by another variable is referred to as the dependent variable (usually the independent variable). The independent variable is manipulated in scientific experiments to determine the effect it has on the dependent variable. An experimental control group is one in which the independent variable is not altered. All parameters remain unchanged. The experimental group is the one where the independent variable is changed.
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