1. Identifying Variables Bellwork
4. IV = amount of light
DV = # of eggs laid
Control = group 1 on normal light
Schedule
5. IV = humidity level
DV = height of tree
Control = tree in normal conditions
IV = concentration of salt solution
DV = plant height
Control = plant given pure water
2. IV = temperature
DV = germination time
Control = group 1 at room temp
3. IV = amount of food
DV = weight
Control = group fed once a day

2. Graphing Review
WCHS Biology

3. Independent variable (x)
dependent variable (y) Y Y X Y X

4. Plotted data
Axis labels (with units)
Independent variable
Dependent variable
Units
scale/spacing ⅔ ¾
Title
Independent then dependent
Key → (include when you have more than 1 set of data)

5. **SAME** Up
Increases
Increases also
Down
decreases
**OPPOSITE**

6. INDIRECT
DIRECT

7. INDIRECT
DIRECT