What is an independent variable?
The cause, the manipulated factor
What does it mean when error bars overlap?
There is no significant difference between the sets of data
What is a control group?
A group that stays the same in an experiment, used as a comparison group
What are the two parts of a hypothesis?
1 - reason explaining the question
2 - a testable statement
What are error bars used for?
They are used to help rule out random chance
What is a dependent variable?
The variable that is measured during the experiment
In experimental design, where do you start?
You start with the testable question
What is a controlled variable?
A variable that is kept the same throughout the experiment to limit bias and random chance
How do you find standard deviation?
1 - find the average
2 - take all of the numbers minus the average
3 - square the differences
4 - find the average
5 - find the square root
How is the control group different than the experimental group?
the control group is the group of variables that stay the same during the experiment and are isolated. The experimental group are the variables that are tested in the experiment to see the possible differences
What is the mean of the students test scores given: 59, 64, 88, 89, 93
78.6%
What axis does the independent variable go on?
The x-axis
What axis does the dependent variable go on?
the y-axis
What is the variance of the students test scores shown: 59, 64, 88, 89, 93
200.24
What is the standard deviation of the student test scores shown: 59, 64, 88, 89, 93
14.15
What is an example of an independent variable in an experiment?
The color of the room in an experiment where you research whether the color of the room affects its temperature
What is an example of a dependent variable in an experiment?
The temperature of a room in an experiment where you research whether the color of the room affects its temperature
What is an example of a controlled variable in an experiment?
measuring your resting heart rate in an experiment where you are researching whether or not listening to music affects your heart rate
What is the format for the reason of a hypothesis?
The <phenomenon> (is caused by, is due to, depends on) <specific></specific></phenomenon>
What is the format for the testable statement in a hypothesis?
if <independent> <increases/decreases>, then <dependent> <increases/decreases></dependent></independent>
