1. MATH 10
Chapter 1
Data Management
Ms. Albarico

2. Key Terms:
Mind Map – a diagram that is often used to represent and examine cause-and-effect relationship. It shows how the variables relate to each other.
Variable - any measured quantity that changes in an experiment or relationship.
Independent variable – a factor that affects another factor in an experiment or relationship
Dependent variable –the factor that is affected by other factors in an experiment or relationship

3. What is the dependent variable? What are the independent variables?
A B C
What is the dependent variable?
What are the independent variables?

4. What is the dependent variable? What are the independent variables?

5. Variable(s)
Dependent
Growth of tree
Independent
Adequate rainfall
Lighting Storm
Vehicle Traffic

6. What other factors that might affect the growth of the tree?

7. Activity ( 15 minutes)
1) Think of another example of a cause-and-effect relationship situation. 2) Draw a mind map. 3) Write down the dependent variable and independent variables.

8. Key Terms:
Controlled variable – any independent variable whose value is held constant during an experiment
Controlled Experiment – any experiment in which all but one independent variable is controlled

10. Which of these two groups of data is organized?
Organizing Your Data
Charlie
Andy
Bryan
Anna
Amy
Amy
Andy
Anna
Bryan
Charlie
Which of these two groups of data is organized?

11. A B C 7 2 10 5 3 2 3 5 7 10 10 7 5 3 2

12. A B C Which data group is easy to understand? Why? Names and Ages
Andy, 9 years old
Amy 4 years old
Bryan, 5 years old
Charlie, 6 years old
Anna, 8 years old
Name
Age
Amy 4
Andy 9
Anna 8
Bryan 5
Charlie 6
Age
Name 4
Amy 5
Bryan 6
Charlie 8
Anna 9
Andy
Which data group is easy
to understand?
Why?

13. Practice
The following table lists the cost operating a 60-W light bulb
for different amounts of time.
Organize the data in the data.
Describe any patterns in the data.

14. Homework
Answer and copy Check Your Understanding # 2 ,5, and 7.

15. MATH 10
1.2 Measuring
Data Management
Ms. Albarico