1.Statistics is said to be a science that is applied in many areas such as social sciences, medicine, accounting, economics, finance, marketing, and information systems, among others. Explains and presents an example of how statistics is used in the area of information systems.

2.We define population as the complete set of all the individuals, things, or events that you want to investigate regarding a particular situation. And, we define the sample as a subset of the population. Establishes a population and a sample that relate to the issue of people who have solar panels installed in their home.

3.Identify in each case whether it is a discrete qualitative, continuous quantitative or quantitative variable.

a) Number of ventilators in the emergency room of the Medical Center

b) Height of the students of the first grade of Christian school

c) Marital status of the members of the Bon Jovi band.

d) Weight of the children held in the pediatric area of the Presbye Hospital

e) gallons of milk produced by a cow daily

f) number of children who have five sisters

4. Determine which of the four measurement levels (nominal, ordinal, interval or ratio) is used in each situation.

a) time of day on a 12-hour clock

b) major Indian religions: 1=Hinduism, 2=Jainism, 3=Buddhism, 4=Sikhism

c) years of work experience of employees of the Caribe Hilton Hotel in San Juan

d)social class of people who received the federal incentive (high, medium, low)

e) number of people contributing income at home

5.Determine an advantage and disadvantage of sampling for convenience.

6.In each of the following exercises, it identifies the type of sampling to which the premise refers: random, systematic, convenient, stratified, by conglomerate:

a) The sample is homogeneous and results as accurate as those of a simple random sampling are provided, but with a smaller sample size

b)Tends to provide better results when the elements within the clusters are not similar

c) A professor conducting research at a university may use student volunteers to form a sample, simply because he has them within reach.