1.3 Experimental Design Flashcards
1
Q
Create a hypotheses: Does fertilizer help plants grow?
A
If we give a plant more fertilizer then the plant will grow taller
2
Q
What is the independent variable: If a plant has more fertilizer then it will grow taller
A
The amount of fertilizer a plant gets
3
Q
What is the dependent variable: If a plant has more fertilizer then it will grow taller
A
How tall the plant gets
4
Q
What would the control group be? If a plant has more fertilizer then it will grow taller
A
A plant with no fertilizer
5
Q
Why do you need a control group?
A
It gives you something to compare your results to.
6
Q
What does a long error bar mean?
A
There is a large variation in your data
7
Q
What does it mean if your error bars do not overlap?
A
There is a significant difference in your data
