Different Data Sources

1. Describe the different data sources, explaining their usefulness and disadvantages.

•Direct Interview

Advantages: the interview used to obtain data directly from the company. which is a communication from one worker to obtain information in accordance with the desired and by conducting interviews obtained more complete data.

Disadvantage: time consuming interview techniques and a very large cost for the sample is big enough and spread. Interviewing means of communication between the interviewer and the interviewee, this tends to generate a difference in interpretation between the two.

•Questionnaires

Advantages: the questionnaire is a research method that must be answered respondents to express his views on an issue. The use of questionnaires as data collection methods have several advantages, among them are questions that will be presented to respondents can be standardized, the respondent can answer a questionnaire on their leisure time, the question can be thought of in advance so that answers can be trusted compared with a verbal answer, and questions raised would be more accurate and uniform.

Disadvantage: the respondent can not give more details because the answer is limited to matters in question.

•Observation

Advantages: With the observation that many symptoms can be investigated, the results are more accurate and difficult to argue with. Many objects are only willing to taken only with the observation data, such as too busy and less time to be interviewed or to complete a questionnaire.

Losses: Observations depends on observation and memory skills. Many events and circumstances that are difficult objects observed, especially concerning the life of a highly confidential approach for cloning.

4. Explain the principles of wording, stating how these are important in questionnaire design, siting examples not in the book.

Principle of the words usually refer to factors such as conformance content questions, how questions and level of language...