Experimental Design Flashcards
What are the two steps in making a hypothesis?
- Come up with a specific reason
- Write a testable statement
Write a hypothesis
If I study more for the test then I will get a better grade because I will know the material I’m taking a test on.
What is a control group?
The group that is not receiving the treatment
What is the % level of confidence in science?
5%
What is a treatment group?
The group that is being changed, gets compared to the control group
What is the importance of a control group?
To show the starting point or “benchmark” when comparing results
Identify a good control group for a scientific experiment
The control groups completes a book in a quiet environment with no distractions
How is length used in error bars to analyze data in a graph?
It allows someone to see the uncertainty in a data point
What is a dependent variable?
The variable that relies on the experiment to make it change (Respondant)
How is overlap used in error bars to analyze data in a graph?
It allows you to compare between means and the precision’s of them
Give an example of a dependent and independent variable in an experiment
Independent: Amount of time a student studies
Dependent: Student’s grade
What are the templates to writing a hypothesis?
- The <phenomenon, topic> (is due to, is caused by, depends on) <specific></specific>
- If <independent/manipulated variable> <increases/decreases>, then <dependent/respondent variable> <increases/decreases>
What do error bars add to samples of data?
They add variability
What is a independent variable?
It is the variable that is changed during an experiment (Manipulated)
When do you use a bar graph?
If the independent variable is grouped
