LESSON 4

SOURCES OF INFORMATION AND BIBLIOGRAPHIC REVIEW.

To Begin with we have learned the use of the literature review useful to select the data that interest us and compare between them.

Secondly, we study the source field information, which is information we obtain or provide us with the study subjects. This information can be obtained by:

•   Direct observation of the researcher. Here you can make mistakes by:

                       The observer

                       By the instrument used

                       The phenomenon observed.

•  Interviews: it is not a useful measure in statistics, because we do not get statistical data.

      Interviews can be structured (the questions are clear) or unstructured (without guion only a few questions that the researcher uses to extract information

• Questionnaires: in statistics is the most used.

         With questionnaires obtain information about a larger number of people in a short time, be able to interpret the data ... but the downside is that they are inflexible.

Finally we saw develop a questionnaire and the advantages and disadvantages of open and closed questions, which was very useful for to do our own research for work.

To develop a questionnaire just follow a few steps:

*Identify  variables

* Search questions already set and previously tested (this aspect I see important because so sure know           you will not make any mistakes when collecting data)

*Choose the right questions.

*Define the codes, scales and ratings (Likert scale or Bartell scale)

* Evaluate the quality of the questionnaire.

To sum up this lesson is a important point for my research,  because good research is based on proper data collection for then to analyze these are correct.