1. A study is carried out to determine the way in which the people get jobs. The table includes the data of 390 people who were randomly selected.

a) Construct a pie graph that corresponds to this data.\

Remember to put the titles and tags.

b) If someone wanted to get a job, what seems to be the

most effective source?

c) Which source has the smallest percentage of people?

(Calculate the relative frequency to answer) IMPORTANT

sources	Frecuency
portales	275
contactos	53
empresas	38
Clasificados	24
	390

2. a) Complete the table and construct a Pareto chart. The table data is the same from exercise 1.

Remember to enter the title of the graph and the axes. Show labels percentage on the line

b) Compare it with the circular graph that you built in exercise 1. Which graph do you think is more effective to show the importance of sources of employment? The pie graph or the graph of

Pareto. Explain the reason for your answer in the space below.

3. A list of blood pressure measurements is displayed diastolic of a group of selected people:

a) Build a dot plot with the data presented.

b) Are there any outliers? If so, indicate which one or which are.

a)Construct a stem-and-leaf plot with the data provided in exercise 3.

b)Which data has the highest frequency?

c) Compare this graph with the dot graph you created in exercise 3. Which graph do you think is most effective for represent this data set? Explain your answer.

68

72

70

86

70

64

66

80

82

74

62

78

82

74

88

66

72

78

74

64

80

78

82

78

60

62

64

66

68

70

72

74

76

78

80

82

84

86

88

90

4. a)Construct a stem-and-leaf plot with the data provided in exercise 3.

b)Which data has the highest frequency?

c) Compare this graph with the dot graph you created in exercise 3. Which graph do you think is most effective for represent this data set? Explain your answer.

68 72 70 86 70 64 66 80 82 74 62 78 82 74 88 66 72 78 74 64 80 78 82 78

5. .In a study of the preferred hobbies of a group of people, it was found that 28 prefer to read, 47 prefer extreme sports, 23 prefer to visit historical places and 52 prefer listen to your favorite style of music.

Complete the table and prepare a bar graph of hobby versus relative frequency for represent this data.

How do you distinguish on the graph which is the hobby preferred by the majority of people?

surveyed?

How many people were surveyed?

Pasatiempo	Frecuency
esc msic	52
deportes	47
visit history	23
leer	28
	150