Unit 1.3 Flashcards
What do you use a bar graph for?
Use a bar graph if the data is independent and catagorical
What do you use a line graph for?
Use a line graph if the data is independent and is quantifiable or related to time.
What are error bars?
Error bars show you the variance in the data.
If there is overlap in the error bars what does that mean?
It means that there is probably no difference in the data.
What is the confidence level?
p<0.05
What do confidence intervals show?
They show the difference.
What is the first step for writing a scientific hypothesis?
Have a specific reason to explain the phenomena
What is the specific steps inside of the first step for writing a scientific hypothesis?
If the phenomenon topic<is>then give a specific reason.</is>
What is the second step in the scientific hypothesis?
Write a testable statement
What are the specific directions inside of the second step of writing a scientific hypothesis?
If independent increases/decreases then the dependent increases/decreases.
How many experimental groups do you need in a control group?
1 or more.
In a control group what variable differs?
The independent variable differs.
What’s the difference between using a bar graph or a line graph?
One is catagorical and one is numerical.
Is the following an example of a hypothesis: The changes in temperature is due to the releases of different gasses into the air.
Yes/True
Why is it important to have a control group?
It gives you a data set to base the rest of your data on. It is a firm foundation that can help you decided whether or not the other data is valid.
