1. Showing patterns & trends
Graphing Your Data
Showing patterns & trends
A picture is worth a thousand words!

2. Types of data (information)
Variables
what you measure in an experiment
_______________________
__________________________
___________________________*
_________
____________________: it only changes because we chose how it would change
_____________________
_________________________________**
____________________: we don’t know how it will change until we do the experiment
________________
Water Depth (m) *
Temperature ℃ ** 10 25 20 18 30 33
The effect of _____________ on _____________
INDEPENDENT
DEPENDENT

3. Examples of experiments 1
How does fertilizer affect the growth rate of plants?
we set up an experiment testing different amounts of fertilizer on different plants & measuring the growth (height) of the plants:
independent variable (X-axis)?
________________________
dependent variable (Y-axis)?
The effect of _____________ on _____________

4. Examples of experiments 2
How does exercise affect heart rate of 10th grade student?
we set up an experiment testing different lengths of time of exercise (minutes) on the heart rate of students:
independent variable (X-axis)?
________________________
dependent variable (Y-axis)?
The effect of _____________ on _____________

5. Examples of experiments 3
What’s the favorite drink of students?
we set up an experiment surveying students and asking which is their favorite drink :
independent variable (X-axis)?
________________________
dependent variable (Y-axis)?
The effect of _____________ on _____________

6. Making pictures out of data
How’s a critter to choose?
Graphs
___________________________
graphing data that shows continuous change
graphing data that is in disconnected groups

7. elevation (feet above sea level)
How does elevation affect temperature?
elevation (feet above sea level)
temp.
(°C) 30
500 25
1000 20
1500 15
2000 10
2500 5 30 25 20
temperature 15 10
1200 ft? 5
500
1000
1500
2000
2500
elevation

8. Which drink do you like best?
number
Coke 1
Pepsi
Water 4
Iced tea
Gatorade 3 6 5 4
number of students 3 2
Red Bull? 1
Coke
Pepsi
water
tea
Gatorade
type of drink

9. Any Questions??