1.3 study guide Flashcards
What is a hypothesis?
A proposed reason that explains a phenomenon
What key items should be in your hypothesis?
An if-then-because explaining the dependent and independent variables
At least how many control groups should you have in your experiment?
1 control group
What is an independent variable?
The variable being tested in an experiment
What is a dependent variable?
The variable being measured in an experiment
What is an error bar?
A visual representation of standard deviation on a graph
What does the length mean in an error bar?
It shows how big or small the standard deviations are
What does overlap of error bars represent?
It represents how the standard deviations overlap and share common grounds with each other
Why is a control group important?
It provides scientists a standard to compare the experimental groups to
What is a control group?
The group in an experiment that doesn’t receive the new treatment being studied
How many experimental groups should you have in a valid experiment?
1 or more experimental groups
Your hypothesis should have ______ statements that are ______
strong, specific
Why is experimental design important?
It provides a template for how a proper and valid experiment should be set up and executed
