8.5 scatterplots

HW pg. 426 #2­18 1

March 07, 2012

Objective: interpret and draw scatter plots

Write the coordinates of each point.

1. A2. B3. C4. D A

C

BD

Bellwork

8.5 scatterplots

HW pg. 426 #2­18 2

March 07, 2012

2. K = C + 273.15; 373.15oK4. f(x) = x ­ 96. f(x) = ­1.2x ­ 2.48. f(x) = (2/5)x + 110. a. q(p) = (1/2)p b. q(f) = f/3212. p(7) = 28; 28 cm14. y = (­1/3)x ­ 216. y = (­1/4)x + 118. y = (3/4)x ­ (1/2)20. y = (2/5)x ­ 1.222. y = ­0.5x + 0.524. y = ­0.7x + 3.1

HW pg. 420 #2­ 24 even

8.5 scatterplots

HW pg. 426 #2­18 3

March 07, 2012

page 420 # 7 ­ 21 OddGraph using slope Page 415 # 30 ­ 35 allGraph using a t table Page 415 # 14 ­ 19 all

7. y = (­4/5)x +211. n(d) = 36d, n(4) = 144 inches13. y = 2x ­ 415. y = 217. y = 3x + 419. y = 4x ­ 321. y = 2x ­ 3

8.5 scatterplots

HW pg. 426 #2­18 4

March 07, 2012

30. y = 2x + 4 31. y = 5x ­ 3 32. y = ­x +1

33. y = (­2/3)x +1 34. y = (1/2)x 35. y = ­3

8.5 scatterplots

HW pg. 426 #2­18 5

March 07, 2012

14. y = 2x + 1 15. y = ­3x ­ 1 16. y = x ­ 4

17. y = 4 18. y = ­3x + 3 19. y = (­3/2)x + 6

8.5 scatterplots

HW pg. 426 #2­18 6

March 07, 2012

8.5 scatterplots

HW pg. 426 #2­18 7

March 07, 2012

Annual Incom

es ($1,000s)

Years of Education Completed 8 10 12 14 16

120110100 90 80 70 60 50 40 30 20 10 0

A

B

Describe the person represented by point A.

How many years of education does the person who earns $100,000 have.

How many people have exactly 12 years of education?

8.5 scatterplots

HW pg. 426 #2­18 8

March 07, 2012

Use the table to make a scatter plot of the latitude and temperature data.

Location Daily Mean(degrees Mean Annual north Temperature Precipitation

City latitude) (oF) (inches)Atlanta, GA 34 61 51Boston, MA 42 51 42Chicago, IL 42 49 36Duluth, MN 47 39 30Honolulu, HI 21 77 22Houston, TX 30 68 46Juneau, AK 58 41 54Miami, FL 26 76 56Phoenix, AZ 33 73 8Portland, ME 44 45 44San Diego, CA 33 64 10Wichita, KS 38 56 29

8.5 scatterplots

HW pg. 426 #2­18 9

March 07, 2012

20 30 40 50 60Locations (degrees north latitude)

Daily mean temperature (oF)

80

70

60

50

40

0

8.5 scatterplots

HW pg. 426 #2­18 10

March 07, 2012

Make a scatter plot of the temperature and precipiatation data. Plot temp along horizontal axis.

Temperature (oF)

8.5 scatterplots

HW pg. 426 #2­18 11

March 07, 2012

Scatterplot

Correlations

8.5 scatterplots

HW pg. 426 #2­18 12

March 07, 2012

HW pg. 426 # 2­18

8.5 scatterplots

HW pg. 426 #2­18 13

March 07, 2012

Warm UpQuiz