unit 4 analysis

Why is system analysis important?

It meets user needs, produces a more efficient system, identifies and avoids problems, and determines user and information requirements.

What are the advantages of using interviews in system analysis?

Interviews allow detailed answers, questions can be expanded or modified, interviewers can explain questions, and body language can be observed.

What are the disadvantages of using interviews in system analysis?

Interviews are time-consuming, not anonymous, require both interviewer and interviewee simultaneously, and are expensive due to analyst’s time.

What are the advantages of using questionnaires in system analysis?

Questionnaires are faster than interviews, cheaper, allow anonymity encouraging truthful answers, reach more people, and allow faster result analysis.

What are the disadvantages of using questionnaires in system analysis?

Questionnaires are not popular with users, too inflexible with no follow-up questions, anonymity may lead to unserious responses, and limit responses.

What are the advantages of using observation in system analysis?

Observation provides reliable data and gives a better overall system view of inputs and outputs.

What are the disadvantages of using observation in system analysis?

People may feel distracted or uncomfortable when being observed.

What are the advantages of examining documents in system analysis?

Examining documents provides information that might not be available through other methods.

What are the disadvantages of examining documents in system analysis?

Examining documents is time-consuming and expensive because it requires analyst’s time.