2. Practice
Book page 29
# 2.1 (women)
# 2.3

13. Dieting

14. Pornography

15. Prostitution

16. Mate Seeking

17. Obesity Trends* Among U.S. Adults BRFSS, 2010
(*BMI ≥30, or ~ 30 lbs. overweight for 5’ 4” person)
By 2050, for example, as many as 1 in 3 adults will develop diabetes if current trends continue
No Data <10% %–14% %–19% %–24% %–29% ≥30%

20. Graphic Presentation of Data
Basic parts of a graph
Y axis
X axis

21. Frequency Polygon
Graphs quantitative data
Neuroticism data

23. Frequency Polygon

24. Frequency Polygon

25. Frequency Polygon

26. Frequency Polygon

27. Frequency Polygon

28. Frequency Polygon

29. Histogram Used to graph quantitative data
Just like a frequency polygon, except it uses bars instead of lines

30. Histogram

31. Histogram

32. Histogram

33. Histogram

34. Histogram

35. Histogram

36. Describing Distributions
Bell-shaped distribution

37. Describing Distributions

38. Describing Distributions

39. Bar Graph Used to present frequencies of qualitative variables
Looks like a histograph
Each bar represents one category

40. Bar Graph

41. Bar Graph

42. Bar Graph

43. Bar Graph

44. Bar Graph

45. Line Graph A picture of a relationship between two variables
Each point represents the value of the Y variable that goes with the corresponding X variable

46. Line Graph

47. Line Graph

48. Line Graph
Put subjects in order using your X axis

49. Line Graph

50. Line Graph
Marsha: N=22; H=2

51. Line Graph
Greg: N=20; H=3

52. Line Graph
Cindy: N=12; H=5

53. Line Graph
Bobby: N=17; H=7

54. Line Graph
Jan: N=15; H=8

55. Line Graph
Peter: N=8; H=9

56. Line Graph

57. What is the meaning of the number 14 on the x-axis?
What is the meaning of the number 14 on the y-axis?
How many people had a score of 11? How about 23?
What type of graph is this? What is its distribution?

58. What is the meaning of the number 20 on the y-axis?
How many males and females are in the course?
What type of graph is this?
What scale does the x axis use? The y axis?
What type of distribution is this?

59. What is the meaning of the number 10 on the x-axis?
What is the meaning of the number 10 on the y-axis?
What type of graph is this?
What type of distribution is this?

63. Practice
Page 38
#2.12

64. Construct a line graph relating the average temperature for January and the elevation of a city. Write a sentence of interpretation.
City
Elevation (feet)
Temperature (F)
Albuquerque, NM
5000 34
Amarillo, TX
3700 35
Flagstaff, AZ
6900 29
Little Rock, AR
350 39
Oklahoma City, OK
1200 36