8. experimental group
the group(s) being tested using
the independent variable
Each test group has only one factor
different from the other test groups:
the independent variable.
9. repeated trials
the number of times the experiment
is repeated
An experiment should be carried out
many times to produce accurate/
repeatable results
10. Before carrying out an experiment,
you MUST identify your independent
variable, constants and dependent
variable.
14. 0 2 4 6
What is this called?
The plant growth that you
observe here can be called . . .
the results (of adding fertilizer)
the response (to adding fertilizer)
the effects (of adding fertilizer)
16. A good hypothesis:
- Is a statement (NOT a question)
- Is written in clear and simple language
- Relates the independent and dependent
variables
- Is testable
- Can be written in several ways
(including if, then statement)
23. fertilizer
0 drops
2 drops
4 drops
6 drops
Independent variable data is always
(a) recorded in the left column
(b) recorded BEFORE experimentation
IV
25. plant growth
1 cm
1.5 cm
1.5 cm
3 cm
Dependent variable data is always
(a) recorded in the right column
(b) recorded DURING experimentation
fertilizer (drops)
0
2
4
6
DV
26. plant growth
1 cm
1.5 cm
1.5 cm
3 cm
fertilizer (drops)
0
2
4
6
plant growth (cm)
1
1.5
1.5
3
27. Choose an appropriate title for the
data table.
fertilizer (drops)
0
2
4
6
plant growth (cm)
1
1.5
1.5
3
Effect of Fertilizer on Plants Growth
28. Data from a correctly constructed
data table can be displayed in a
graph.
fertilizer (drops)
0
2
4
6
plant growth (cm)
1
1.5
1.5
3
Effect of Fertilizer on Plants
29. IV data is plotted on the X axis.
DV data is plotted on the Y axis.
fertilizer (drops)
0
2
4
6
plant growth (cm)
1
1.5
1.5
3
Effect of Fertilizer on Plants
fertilizer (drops)
plant
growth
(cm)
0 2 4 6
1.0
2.0
1.5
.5
2.5
3.0
30. The title of the data table is also the
title of the graph.
fertilizer (drops)
0
2
4
6
plant growth (cm)
1
1.5
1.5
3
Effect of Fertilizer on Plants
fertilizer (drops)
plant
growth
(cm)
0 2 4 6
1.0
2.0
1.5
.5
2.5
3.0
Effect of Fertilizer on Plants