1. Warm Up 1. Order the numbers , 1.5, , , and least to greatest.
2. The mass of a dust particle is 7.53 x
What is the correct standard notation for this number?
3. The average distance from the Earth to the sun is
149,600,000 kilometers. What is the correct way to
write this number in scientific notation?

2. 9-1 Scatter Plots Learn to create and interpret scatter plots.
Course 3
9-1
Scatter Plots
Learn to create and interpret scatter plots.

3. Insert Lesson Title Here
Course 3
9-1
Scatter Plots
Insert Lesson Title Here
Vocabulary
Bivariate data
scatter plot
association
line of best fit

4. 9-1 Scatter Plots Data with two variables are called bivariate data.
Course 3
9-1
Scatter Plots
Data with two variables are called bivariate data.
A scatter plot is a graph with points plotted to show a relationship between two sets of data.

5. Course 3
9-1
Scatter Plots
Use the given data to construct a scatter plot of the weight and height of each member of a basketball team.
The points on the scatter plot are (71, 170), (68, 160), (70, 175), (73, 180), and (74, 190).

6. Course 3
9-1
Scatter Plots
Use the given data to construct a scatter plot of the weight and height of each member of a soccer team. x y
Height (in)
Weight (lbs)
200
190
180
170
160
150
140
130
120 63
125 67
156 69
175 68
135
Weight 62
120
Height

7. Course 3
9-7
Scatter Plots
Association describes the type of relationship between two data sets.
The line of best fit is the line that comes closest to all the points on a scatter plot. One way to estimate the line of best fit is to lay a ruler’s edge over the graph and adjust it until it looks closest to all the points.

8. Course 3
9-7
Scatter Plots
Positive Association; both data sets increase together.
No Association no trent
Negative association; as one data set increases, the other decreases.
Two sets of data have linear association when the data points lie close to a line.
Two sets of data have non-linear association when the data points do not lie close to a line.

9. Positive Negative No association
The longer your hair grows, the more shampoo you will need.
As the temperature increases, fewer hot chocolate products are sold
The temperature outside, and your test grade.
The more gasoline you put in your car, the farther it can go.
The number of pets you have, and your weight.
As one exercises more, his body weight becomes less.
The number of shirts you own and how many friends you have.
The more one works, the less free time one has
As a child grows, so does his clothing size

10. Course 3
9-7
Scatter Plots
Do the data sets have a positive, a negative, or no association?
The size of a jar of baby food and the number of jars of baby food a baby will eat.
Negative: as jar gets bigger, baby eats less jars of food

11. Do the data sets have a positive, a negative, or no association?
The speed of a runner and the number of races she wins.
Positive: The faster the runner, the more races are won

12. Do the data sets have a positive, a negative, or no association?
The amount of time one works out at the gym, and the body fat one may have. 
Negative: the more workouts at the gym the less body fat one will have

13. Do the data sets have a positive, a negative, or no association?
The size of a person and the number of fingers he has
No association

14. Insert Lesson Title Here
A strong association does not mean there is a cause-and-effect relationship. For example, your age and the price of a regular movie ticket are both increasing, so they are positively correlated.
Helpful Hint

15. Do the data sets have a positive, a negative, or no association?
The amount of time you spend running on a treadmill, the amount of calories you will burn.
Positive: The more time spent running the more calories burnt

16. Do the data sets have a positive, a negative, or no association?
The size of a car or truck and the number of miles per gallon of gasoline it can travel.
Negative: the bigger the vehicle the worse the gas mileage

17. Do the data sets have a positive, a negative, or no correlation?
A persons height and a persons grade in math
No association

18. Do the data sets have a positive, a negative, or no correlation?
the number of A’s you receive Your grade point average and
Positive: The more A’s the better the GPA

19. Do the data sets have a positive, a negative, or no association?
The number of telephones using the same phone number and the number of calls you receive.
No association

20. The scatter plot below shows the population of a village
(P) over time (t). Describe the relationship between
the population of the village and time.
No association

21. Use the data to predict how much a worker will earn in tips in 10 hours.

22. Circuit Board Assemblies 2 7 5 12
Use the data to predict how many circuit boards a worker will assemble in 10 hours.
Hours Worked 4 8 6 9 11
Circuit Board Assemblies 2 7 5 12
Hours
Circuit Board Assemblies

23. Insert Lesson Title Here
Lesson Quiz: Part I
1. Use the given information to make a scatter plot.
Grading Period 1 2 3 4
Number of A’s 5 6 8 10

24. Insert Lesson Title Here
Lesson Quiz: Part II
Do the data sets have a positive, negative, or no association?
2. the minimum wage and the year
3. the amount of precipitation and the day of the week
4. the amount of germs on your hands and the number of times you wash your hands in a day
positive
no association
negative