Solve the exercises below according to the instructions provided for each one.

Exercise 1

A study is conducted to determine the way people obtain employment. The table includes data from 400 people who were randomly selected.

Sources of employment of people surveyed	Frequency
Classified ads	56
Companies looking for executives	44
Interpersonal contacts	280
Shipping by mail	20

1. Construct a pie chart that corresponds to this data. (5 points)
2. If someone wanted to get a job, what seems to be the most effective source? (2 points)
3. Which source has the smallest percent of people? (2 points)

Exercise 2

1. Build a Pareto chart with the data from the table in exercise 1. (5 points)
2. Compare it with the pie chart you built. Which graph do you think would be more effective in showing the importance of sources of employment? Explain your answer. (2 points)

Exercise 3

Below is a list of diastolic blood pressure measurements from a selected group of people:

62	70	72	88	70	66	68	70	82	74	90	62
70	76	90	86	60	78	82	78	84	76	60	64

1. Construct a dot plot with the data presented. (5 points)
2. Are there any outliers? If so, indicate which one or which they are. (2 points)